* Send email to assigned user

* Only send mail if enabled

* Mail also when assigned through API

* Need to refactor functions from models to issue service

* Refer to issue index rather than ID

* Disable email notifications completly at initalization if global disable

* Check of user enbled mail shall be in mail notification function only

* Initialize notifications from routers init function.

* Use the assigned comment when sending assigned mail

* Refactor so that assignees always added as separate step when new issue/pr.

* Check error from AddAssignees

* Check if user can be assiged to issue or pull request

* Missing return

* Refactor of CanBeAssigned check.

CanBeAssigned shall have same check as UI.

* Clarify function names (toggle rather than update/change), and clean up.

* Fix review comments.

* Flash error if assignees was not added when creating issue/pr

* Generate error if assignee users doesn't exist

* fix bug on pull requests when transfer head repository

* add migration and fix lint

* fix tests and add a cache check on LoadBaseRepo

* move AddTestPullRequestTask to pull service package from models

* fix fmt

* Revert #7898

* Transaction-aware retry create issue to cope with duplicate keys

* Restore INSERT ... WHERE usage

* Rearrange code for clarity

* Fix error return in newIssue()

* Fix error message

* Use correct index when fetching commit status

Signed-off-by: Elias Norberg <elias@aisle.se>

* Compare against base repo to avoid mismatch when merging from fork

Signed-off-by: Elias Norberg <elias@aisle.se>

* extract actions on new pull request from models to pulls service

* improve code

* move code.gitea.io/gitea/modules/pull to code.gitea.io/gitea/services/pull

* fix fmt

* Rename pulls.go to pull.go

* refuse merge until ci successfully

* deny merge request when required status checkes not succeed on merge Post and API

* add database migration for added columns on protected_branch

* fix migration

* fix protected branch check bug

* fix protected branch settings

* remove duplicated code on check pull request's required commit statuses pass

* remove unused codes

* fix migration

* add newline for template file

* fix go mod

* rename function name and some other fixes

* fix template

* fix bug pull view

* remove go1.12 wrong dependencies

* add administrator bypass when protected branch status check enabled

* fix bug

* improve the codes

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Logs the stderr of git-apply
* Add an integration test
* Skip testPatch when patch is empty

* display ui time with customize time location

* fix lint

* rename UILocation to DefaultUILocation

* move time related functions to modules/timeutil

* fix tests

* fix tests

* fix build

* fix swagger

* only return head: null if source branch was deleted

* add URL into GetPullRequest

* TestPullRequest_APIFormat

* log error if it is not Err(Branch)NotExist

* Fix #6946 by checking PullRequest ID on pushing

* Ensure we have the owner name, the pr attributes and the the issue

* Fix TestSearchRepo by waiting till indexing is done

* Update integrations/repo_search_test.go

* changes as per @mrsdizzie

* missing comma

* Spelling mistake

* Fix full pushing environment

* Show Pull Request button or status of latest PR in branch list

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Do not show pull request button on deleted branches

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Do not show commit divergence on deleted branches

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Use XORMs Get instead of limit

* Links pull request ID and use smaller labels for displaying the pull request status

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Handle error when getting latest pull request

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Indent template

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Check error when loading issue

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* monitor all git commands; move blame to git package and replace git as a variable

* use git command but not other commands

* fix build

* move exec.Command to git.NewCommand

* fix fmt

* remove unrelated changes

* remove unrelated changes

* refactor IsEmpty and add tests

* fix tests

* fix tests

* fix tests

* fix tests

* remove gitLogger

* fix fmt

* fix isEmpty

* fix lint

* fix tests

On merge we walk the merge history and ensure that all lfs objects pointed to in
the history are added to the base repository. This switches from relying on having git-lfs installed on the server, (and in fact .gitattributes being correctly installed.)

* Supports tags when comparing commits or branches

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Hide headline when only comparing and don't load unused data

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Merges compare logics to allow comparing branches, commits and tags with eachother

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Display branch or tag instead of commit when used for comparing

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Show pull request form after click on button

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Transfers relevant pull.go changes from master to compare.go

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Fixes error when comparing forks against a commit or tag

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Removes console.log from JavaScript file

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Show icon next to commit reference when comparing branch or tag

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Updates css file

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Fixes import order

* Renames template variable

* Update routers/repo/compare.go

Co-Authored-By: zeripath <art27@cantab.net>

* Update from master

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Allow short-shas in compare

* Renames prInfo to compareInfo

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Check PR permissions only if compare is pull request

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Adjusts comment

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Use compareInfo instead of prInfo

* Add options to git.Clone to make it more capable

* Begin the process of removing the local copy and tidy up

* Remove Wiki LocalCopy Checkouts

* Remove the last LocalRepo helpers

* Remove WithTemporaryFile

* Enable push-hooks for these routes

* Ensure tests cope with hooks

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove Repository.LocalCopyPath()

* Move temporary repo to use the standard temporary path

* Fix the tests

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove LocalWikiPath

* Fix missing remove

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Use AppURL for Oauth user link (#6894)

* Use AppURL for Oauth user link

Fix #6843

* Update oauth.go

* Update oauth.go

* internal/ssh: ignore env command totally (#6825)

* ssh: ignore env command totally

* Remove commented code 

Needed fix described in issue #6889

* Escape the commit message on issues update and title in telegram hook (#6901)

* update sdk to latest (#6903)

* improve description of branch protection (fix #6886) (#6906)

The branch protection description text were not quite accurate.

* Fix logging documentation (#6904)

* ENABLE_MACARON_REDIRECT should be REDIRECT_MACARON_LOG

* Allow DISABLE_ROUTER_LOG to be set in the [log] section

* [skip ci] Updated translations via Crowdin

* Move sdk structs to modules/structs (#6905)

* move sdk structs to moduels/structs

* fix tests

* fix fmt

* fix swagger

* fix vendor

* move sdk structs to moduels/structs

* fix tests

* fix fmt

* fix swagger

* fix vendor

* fix pulls broken when fork repository deleted

* fix lint

* Use go-git for tree reading and commit info lookup.

Signed-off-by: Filip Navara <navara@emclient.com>

* Use TreeEntry.IsRegular() instead of ObjectType that was removed.

Signed-off-by: Filip Navara <navara@emclient.com>

* Use the treePath to optimize commit info search.

Signed-off-by: Filip Navara <navara@emclient.com>

* Extract the latest commit at treePath along with the other commits.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix listing commit info for a directory that was created in one commit and never modified after.

Signed-off-by: Filip Navara <navara@emclient.com>

* Avoid nearly all external 'git' invocations when doing directory listing (.editorconfig code path is still hit).

Signed-off-by: Filip Navara <navara@emclient.com>

* Use go-git for reading blobs.

Signed-off-by: Filip Navara <navara@emclient.com>

* Make SHA1 type alias for plumbing.Hash in go-git.

Signed-off-by: Filip Navara <navara@emclient.com>

* Make Signature type alias for object.Signature in go-git.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix GetCommitsInfo for repository with only one commit.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix PGP signature verification.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix issues with walking commit graph across merges.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix typo in condition.

Signed-off-by: Filip Navara <navara@emclient.com>

* Speed up loading branch list by keeping the repository reference (and thus all the loaded packfile indexes).

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix lising submodules.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix build

Signed-off-by: Filip Navara <navara@emclient.com>

* Add back commit cache because of name-rev

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix tests

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix code style

* Fix spelling

* Address PR feedback

Signed-off-by: Filip Navara <navara@emclient.com>

* Update vendor module list

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix getting trees by commit id

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix remaining unit test failures

* Fix GetTreeBySHA

* Avoid running `git name-rev` if not necessary

Signed-off-by: Filip Navara <navara@emclient.com>

* Move Branch code to git module

* Clean up GPG signature verification and fix it for tagged commits

* Address PR feedback (import formatting, copyright headers)

* Make blob lookup by SHA working

* Update tests to use public API

* Allow getting content from any type of object through the blob interface

* Change test to actually expect the object content that is in the GIT repository

* Change one more test to actually expect the object content that is in the GIT repository

* Add comments

* Panic don't fatal on create new logger

Fixes #5854

Signed-off-by: Andrew Thornton <art27@cantab.net>

* partial broken

* Update the logging infrastrcture

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Reset the skip levels for Fatal and Error

Signed-off-by: Andrew Thornton <art27@cantab.net>

* broken ncsa

* More log.Error fixes

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Remove nal

* set log-levels to lowercase

* Make console_test test all levels

* switch to lowercased levels

* OK now working

* Fix vetting issues

* Fix lint

* Fix tests

* change default logging to match current gitea

* Improve log testing

Signed-off-by: Andrew Thornton <art27@cantab.net>

* reset error skip levels to 0

* Update documentation and access logger configuration

* Redirect the router log back to gitea if redirect macaron log but also allow setting the log level - i.e. TRACE

* Fix broken level caching

* Refactor the router log

* Add Router logger

* Add colorizing options

* Adjust router colors

* Only create logger if they will be used

* update app.ini.sample

* rename Attribute ColorAttribute

* Change from white to green for function

* Set fatal/error levels

* Restore initial trace logger

* Fix Trace arguments in modules/auth/auth.go

* Properly handle XORMLogger

* Improve admin/config page

* fix fmt

* Add auto-compression of old logs

* Update error log levels

* Remove the unnecessary skip argument from Error, Fatal and Critical

* Add stacktrace support

* Fix tests

* Remove x/sync from vendors?

* Add stderr option to console logger

* Use filepath.ToSlash to protect against Windows in tests

* Remove prefixed underscores from names in colors.go

* Remove not implemented database logger

This was removed from Gogs on 4 Mar 2016 but left in the configuration
since then.

* Ensure that log paths are relative to ROOT_PATH

* use path.Join

* rename jsonConfig to logConfig

* Rename "config" to "jsonConfig" to make it clearer

* Requested changes

* Requested changes: XormLogger

* Try to color the windows terminal

If successful default to colorizing the console logs

* fixup

* Colorize initially too

* update vendor

* Colorize logs on default and remove if this is not a colorizing logger

* Fix documentation

* fix test

* Use go-isatty to detect if on windows we are on msys or cygwin

* Fix spelling mistake

* Add missing vendors

* More changes

* Rationalise the ANSI writer protection

* Adjust colors on advice from @0x5c

* Make Flags a comma separated list

* Move to use the windows constant for ENABLE_VIRTUAL_TERMINAL_PROCESSING

* Ensure matching is done on the non-colored message - to simpify EXPRESSION

* move code.gitea.io/git to code.gitea.io/gitea/modules/git

* fix imports

* fix fmt

* fix misspell

* remove wrong tests data

* fix unit tests

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* enable Debug to trace the failure tests

* fix tests

* fix tests

* fix tests

* fix tests

* fix tests

* comment commit count tests since git clone depth is 50

* fix tests

* update from code.gitea.io/git

* revert change to makefile

* add conflict detection

* test pull request conflict files

* fix detection files number

* fix comments

* Make sure .git/info is created before generating .git/info/sparse-checkout

* fix permissions

* Optimize pulls merging

By utilizing `git clone -s --no-checkout` rather than cloning the whole
repo.

* Use sparse-checkout to speedup pulls merge

* Use bytes.Buffer instead of strings.Builder for backward compatibility

* Fix empty diff-tree output for repos with only the initial commit

* Fix missing argument for the format string

* Rework diff-tree-list generation

* Remove logging code

* File list for sparse-checkout must be prefix with /

Otherwise, they would match all files with the same name under
subdirectories.

* Update onto the rebased head

* Use referecen repo to avoid fetching objects

* notification for indexer

* use NullNotifier as parent struct

* Fixed deadlock in CreateComment

* Fix possible deadlock in UpdateIssueDeadline from createDeadlineComment

* Ensure that calls to IsTimeTracker enabled are called within session

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Ensure that calls to reactionList are also called within session

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Ensure all calls in NewPullRequest with the session are called within the session

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Deal with potential deadlocks in repo

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Ensure that isStaring is checked within our transaction

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Fix mistake in isOrganizationMember

Sorry.

* mail notification implement interface

* fix file comment year

* use NullNotifier as parent struct of notifiers

Signed-off-by: Julian Tölle <julian.toelle97@gmail.com>

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add branch protection for approvals

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add required approvals

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add missing comments and fmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add type = approval and group by reviewer_id to review

* Prevent users from adding negative review limits

* Add migration for approval whitelists

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* fix units permission problems

* fix some bugs and merge LoadUnits to repoAssignment

* refactor permission struct and add some copyright heads

* remove unused codes

* fix routes units check

* improve permission check

* add unit tests for permission

* fix typo

* fix tests

* fix some routes

* fix api permission check

* improve permission check

* fix some permission check

* fix tests

* fix tests

* improve some permission check

* fix some permission check

* refactor AccessLevel

* fix bug

* fix tests

* fix tests

* fix tests

* fix AccessLevel

* rename CanAccess

* fix tests

* fix comment

* fix bug

* add missing unit for test repos

* fix bug

* rename some functions

* fix routes check

* prevent pull request to be merged when PR is a WIP

* add tests

* add helper to prepend WIP: in PR title

* move default wip prefixes into settings

* use configurable WIP prefixes in javascript and default to first one in templates

* add documentation

* add unit test on pull model

Signed-off-by: Julien Tant <julien@craftyx.fr>

* Initial ui components for pull request review

* Add Review
Add IssueComment types

Signed-off-by: Jonas Franz <info@jonasfranz.software>

(cherry picked from commit 2b4daab)
Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Replace ReviewComment with Content

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add load functions
Add ReviewID to findComments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add create review comment implementation
Add migration for review
Other small changes

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Simplified create and find functions for review

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Moved "Pending" to first position

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add GetCurrentReview to simplify fetching current review

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Preview for listing comments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Move new comment form to its own file

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Implement Review form
Show Review comments on comment stream

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for single comments
Showing buttons in context

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add pending tag to pending review comments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add unit tests for Review

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fetch all review ids at once
Add unit tests

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* gofmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Improved comment rendering in "Files" view by adding Comments to DiffLine

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for invalidating comments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Switched back to code.gitea.io/git

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Moved review migration from v64 to v65

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Rebuild css

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* gofmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Improve translations

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix unit tests by updating fixtures and updating outdated test

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Comments will be shown at the right place now

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for deleting CodeComments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix problems caused by files in subdirectories

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for showing code comments of reviews in conversation

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for "Show/Hide outdated"

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Update code.gitea.io/git

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add support for new webhooks

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Update comparison

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Resolve conflicts

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Minor UI improvements

* update code.gitea.io/git

* Fix ui bug reported by @lunny causing wrong position of add button
Add functionality to "Cancel" button
Add scale effects to add button
Hide "Cancel" button for existing comments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Prepare solving conflicts

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Show add button only if no comments already exist for the line

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add missing vendor files

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Check if reviewer is nil

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Show forms only to users who are logged in

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Revert "Show forms only to users who are logged in"

This reverts commit c083682

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Save patch in comment
Render patch for code comments

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add link to comment in code

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add reply form to comment list
Show forms only to signed in users

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add 'Reply' as translatable
Add CODE_COMMENT_LINES setting

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* gofmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix problems introduced by checking for singed in user

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add v70

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Update generated stylesheet

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix preview
Beginn with new review comment patch system

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add new algo to generate diff for line range
Remove old algo used for cutting big diffs (it was very buggy)

* Add documentation and example for CutDiffAroundLine

* Fix example of CutDiffAroundLine

* Fix some comment UI rendering bugs

* Add code comment edit mode

* Send notifications / actions to users until review gets published
Fix diff generation bug
Fix wrong hashtag

* Fix vet errors

* Send notifications also for single comments

* Fix some notification bugs, fix link

* Fix: add comment icon is only shown on code lines

* Add lint comment

* Add unit tests for git diff

* Add more error messages

* Regenerated css

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* fmt

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Regenerated CSS with latest less version

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix test by updating comment type to new ID

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Introducing CodeComments as type for map[string]map[int64][]*Comment
Other minor code improvements

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Fix data-tab issues

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Remove unnecessary change

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* refactored checkForInvalidation

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Append comments instead of setting

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Use HeadRepo instead of BaseRepo

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Update migration

Signed-off-by: Jonas Franz <info@jonasfranz.de>

* Regenerated CSS

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add copyright

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Update index.css

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* fix some webhooks bugs

* update vendor

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* fix test

* fix clearlabels

* fix pullrequest webhook bug fix #3492

* update release webhook description

* remove unused code

* fix push webhook in pull request

* small changes

* Started adding deadline to ui

* Implemented basic issue due date managing

* Improved UI for due date managing

* Added at least write access to the repo in order to modify issue due dates

* Ui improvements

* Added issue comments creation when adding/modifying/removing a due date

* Show due date in issue list

* Added api support for issue due dates

* Fixed lint suggestions

* Added deadline to sdk

* Updated css

* Added support for adding/modifiying deadlines for pull requests via api

* Fixed comments not created when updating or removing a deadline

* update sdk (will do properly once go-gitea/go-sdk#103 is merged)

* enhanced updateIssueDeadline

* Removed unnessecary Issue.DeadlineString

* UI improvements

* Small improvments to comment creation
+ ui & validation improvements

* Check if an issue is overdue is now a seperate function

* Updated go-sdk with govendor as it was merged

* Simplified isOverdue method

* removed unessecary deadline to 0 set

* Update swagger definitions

* Added missing return

* Added an explanary comment

* Improved updateIssueDeadline method so it'll only update `deadline_unix`

* Small changes and improvements
* no need to explicitly load the issue when updating a deadline, just use whats already there
* small optimisations

* Added check if a deadline was modified before updating it

* Moved comment creating logic into its own function

* Code cleanup for creating deadline comment

* locale improvement

* When modifying a deadline, the old deadline is saved with the comment

* small improvments to xorm session handling when updating an issue deadline
+ style nitpicks

* style nitpicks

* Moved checking for if the user has write acces to middleware

* Add database migrations for merge whitelist

* Add merge whitelist settings for protected branches

* Add checks for merge whitelists

* Added checks for protected branches in pull requests

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Moved check for protected branch into new function CheckUserAllowedToMerge

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Removed merge conflict lines from last commit

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Explicit check for error type in ViewIssue

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Force-push to base repo's ref/pull/#/head

Fixes force-pushing to pull request branches, otherwise failing with:

[...gitea/models/pull.go:1022 AddTestPullRequestTask()] [E] PushToBaseRepo: Push: exit status 1 - To /path/to/gitea-repositories/org/repo.git
 ! [rejected]        issue-fix -> refs/pull/20/head (non-fast-forward)

* format