* Speed up conflict checking in pull request creation

In order to check conflicts of a PR, we set up a working tree by
cloning the base branch, which is quite time-consuming when the repository is huge.
Instead, this PR uses `git read-tree` and `git apply --check --cached` to check conflicts.

For #258

* Use $GIT_INDEX_FILE instead of --index-output to avoid lockfile problem

The lockfile gets renamed to the final destination after the operation
finishes. But it must be located in the same filesystem, which prevents
us from using /tmp.

* Temporary file names should not prefixed with '-'

* Tab on user profile to show starred repos

* Make golint happy and use transactions on StarRepo function

* x -> sess

* Use sess.Close() instead of sess.Rollback()

* Add copyright

* Fix lint

* Add model and tests for graph

* Add route and router for graph

* Add assets for graph

* Add template for graph

* optimization for user.GetRepositoryAccesses to reduce db query times

* fix missing cache

Fix default cookie name

Added Dutch translations to the landingpage

At the locales replaced 6 with MIN_PASSWORD_LENGTH

Delete branch from HeadRepo instead of BaseRepo
Prevent the deletion of a master branch
Show a yes/no overlay when you press the delete branch button

* Improve issue references in markdown. (#3436)

* Fix build

* Fix lint

* Fix comment typo

* Import github.com/git-lfs/lfs-test-server as lfs module base

Imported commit is 3968aac269

Removed:

Dockerfile CONTRIBUTING.md mgmt* script/ vendor/ kvlogger.go
.dockerignore .gitignore README.md

* Remove config, add JWT support from github.com/mgit-at/lfs-test-server

Imported commit f0cdcc5a01

* Add LFS settings

* Add LFS meta object model

* Add LFS routes and initialization

* Import github.com/dgrijalva/jwt-go into vendor/

* Adapt LFS module: handlers, routing, meta store

* Move LFS routes to /user/repo/info/lfs/*

* Add request header checks to LFS BatchHandler / PostHandler

* Implement LFS basic authentication

* Rework JWT secret generation / load

* Implement LFS SSH token authentication with JWT

Specification: https://github.com/github/git-lfs/tree/master/docs/api

* Integrate LFS settings into install process

* Remove LFS objects when repository is deleted

Only removes objects from content store when deleted repo is the only
referencing repository

* Make LFS module stateless

Fixes bug where LFS would not work after installation without
restarting Gitea

* Change 500 'Internal Server Error' to 400 'Bad Request'

* Change sql query to xorm call

* Remove unneeded type from LFS module

* Change internal imports to code.gitea.io/gitea/

* Add Gitea authors copyright

* Change basic auth realm to "gitea-lfs"

* Add unique indexes to LFS model

* Use xorm count function in LFS check on repository delete

* Return io.ReadCloser from content store and close after usage

* Add LFS info to runWeb()

* Export LFS content store base path

* LFS file download from UI

* Work around git-lfs client issue with unauthenticated requests

Returning a dummy Authorization header for unauthenticated requests
lets git-lfs client skip asking for auth credentials
See: https://github.com/github/git-lfs/issues/1088

* Fix unauthenticated UI downloads from public repositories

* Authentication check order, Finish LFS file view logic

* Ignore LFS hooks if installed for current OS user

Fixes Gitea UI actions for repositories tracking LFS files.
Checks for minimum needed git version by parsing the semantic version
string.

* Hide LFS metafile diff from commit view, marking as binary

* Show LFS notice if file in commit view is tracked

* Add notbefore/nbf JWT claim

* Correct lint suggestions - comments for structs and functions

- Add comments to LFS model
- Function comment for GetRandomBytesAsBase64
- LFS server function comments and lint variable suggestion

* Move secret generation code out of conditional

Ensures no LFS code may run with an empty secret

* Do not hand out JWT tokens if LFS server support is disabled

* provide button to delete merged pull request

* golint fix

* Implemented sendmail. This piggybacks on existing configuration to keep the change simple

* Changed privicy of new sendSMTP and sendSendmail functions

* Fixed Lint errors

* Seperated SMTP and sendmail into their own senders

* Making new structs private as they should not be used externally now

* Added sendmail setting to ini file

* Minor code cleanup

Correctly handle simultaneous assignee/poster filters, and conflicting assignee filters

* Enables mssql support

Port of dlobs work in gogs.
Enables options in index.js
Enables MSSQL as a database option in go.
Sets ID to 0 on initial migration. Required for
MSSQL insert statements.

Signed-off-by: Beau Trepp <beautrepp@gmail.com>

* Vendors in denisenkom/go-mssqldb

Includes golang.org/x/crypto/md4
as this is required by go-msssqldb

Signed-off-by: Beau Trepp <beautrepp@gmail.com>

* fix broken godoc link and add arch in English README

* typo

* Dropped the status from readme, it's anway always outdated

* Added version badge

* Cleaned the install instructions

* Dropped paragraphs that should be documented on the docs

* Simplified the content, refer to the website

* Dropped the logo, lets show screenshots

* Fixed TRANSLATORS link

* add default values for settings

* more default values

* more default settings and labels resource

* mv locale to options

* Moved conf assets into options folder

* Dropped old bindata

* Started to integrate options bindata and accessors

* Do not enforce a builtin app.ini

* Replaced bindata calls with options

* Dropped bindata task from makefile, it's the generate task now

* Always embedd app.ini to provide sane config defaults

* Use sane defaults for the configuration

* Defined default value for SSH_KEYGEN_PATH

* Dropped "NEVER EVER MODIFY THIS FILE" header from app.ini

* Fixed new paths in latest test additions

* Drop bindata with make clean task

* Set more proper default values