* improvements for supporting UI Location

* improved the comment

* refactor struct's time to remove unnecessary memory usage

* use AsTimePtr simple code

* fix tests

* fix time compare

* fix template on gpg

* use AddDuration instead of Add

* Fix avatar URLs

* import order

* Add checks for commits with missing author and time

* Fix validate commits with emails if it has no Author

* hide unactive on explore users and some refactors

* fix test for removed Organizations

* fix test for removed Organizations

* fix imports

* fix logic bug

* refactor the toConds

* Rename TestOrganizations to TestSearchUsers and add tests for users

* fix other tests

* fix other tests

* fix watchers tests

* fix comments and remove unused code

* use buffersize to reduce database connection when iterate

* fix typo

* add default value on app.ini comment

* use AfterLoad instead of AfterSet on Structs

* fix the comments on AfterLoad

* fix the comments on action AfterLoad

* reduce usage of allcols on update

* fix bug and tests

* Filter inactive users before sending emails or creating browser notifications

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* fix formatting issues

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* included requested changes

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* optimized database queries

* rebasing new master and add tablenames for clarification in xorm queries

* remove escaped quotationmarks using backticks

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* use created & updated instead BeforeInsert & BeforeUpdate

* fix vendor checksum

* only show generated SQL when development mode

* remove extra update column updated_unix

* remove trace config

* Create option to disable githooks globally via configuration file

* Update comment in app.ini to align with @ethantkoenig's suggestion

Signed-off-by: Matti Ranta <matti@mdranta.net>

* only update needed columns when update user

* fix missing update_unix column

* Fix username rendering bug

* XSS integration test

* Migration to unescape user full names

* Fix and test for delete user

* Run updates in batches

* Unit test

* Santiation fix from Gogs

* Linting

* Fix build-errors

* still not working

* Fix all the things!

* gofmt

* Add code-injection checks

Also add unit tests

This PR fix the avatar bug described in #1114. This will fix random avatar is blank problem and potential delete avatars dir problem.

* bug fixed for org avatar caused by #1049

* use isfile only

* fix avatar enumable

* fix import style

* refactor for searching user

* fix like bug

* better format for builder cond

* initial stuff for oauth2 login, fails on:
* login button on the signIn page to start the OAuth2 flow and a callback for each provider
Only GitHub is implemented for now
* show login button only when the OAuth2 consumer is configured (and activated)
* create macaron group for oauth2 urls
* prevent net/http in modules (other then oauth2)
* use a new data sessions oauth2 folder for storing the oauth2 session data
* add missing 2FA when this is enabled on the user
* add password option for OAuth2 user , for use with git over http and login to the GUI
* add tip for registering a GitHub OAuth application
* at startup of Gitea register all configured providers and also on adding/deleting of new providers
* custom handling of errors in oauth2 request init + show better tip
* add ExternalLoginUser model and migration script to add it to database
* link a external account to an existing account (still need to handle wrong login and signup) and remove if user is removed
* remove the linked external account from the user his settings
* if user is unknown we allow him to register a new account or link it to some existing account
* sign up with button on signin page (als change OAuth2Provider structure so we can store basic stuff about providers)

* from gorilla/sessions docs:
"Important Note: If you aren't using gorilla/mux, you need to wrap your handlers with context.ClearHandler as or else you will leak memory!"
(we're using gorilla/sessions for storing oauth2 sessions)

* use updated goth lib that now supports getting the OAuth2 user if the AccessToken is still valid instead of re-authenticating (prevent flooding the OAuth2 provider)

* fix all the bugs in issues and pulls on dashboard

* small fix and refactor

* add method getRepoIDs for IssueList

This change corrects a few logging issues:

 * Standardized formatting errors with '%v'.
 * Standardized failure warning word usage.
 * Corrected an instance of using the standard log library when
   the gitea log library should be used instead.