* move all push update to git hook post-receive and protected branch check to git hook pre-receive

* add SSH_ORIGINAL_COMMAND check back

* remove all unused codes

* fix the import

* 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)

* Protected branches system

* Moved default branch to branches section (`:org/:reponame/settings/branches`).
* Initial support Protected Branch.
  - Admin does not restrict
  - Owner not to limit
  - To write permission restrictions

* reformat tmpl

* finished the UI and add/delete protected branch response

* remove unused comment

* indent all the template files and remove ru translations since we use crowdin

* fix the push bug

* Fix assigned/created issues in dashboard. (#3560)

* Fix assigned/created issues in dashboard.

* Use GetUserIssueStats for getting all Dashboard stats.

* Use gofmt to format the file properly.

* Replace &Issue{} with new(Issue).

* Check if user has access to given repository.

* Remove unnecessary filtering of issues.

* Return 404 error if invalid repository is given.

* Use correct number of issues in paginater.

* fix issues on dashboard

* Markdown rendering overhaul

Cleaned up and squashed commits into single one.

Signed-off-by: Andrew Boyarshin <boyarshinand@gmail.com>

* Fix markdown API, add markdown module and API tests, improve code coverage

Signed-off-by: Andrew Boyarshin <boyarshinand@gmail.com>

* add delete branch track on pull request comments

* don't change vendor

and updating the vendor directory

* Redirects for renamed repos

* Remove unused phrase from locales

* Add units concept for modulable functions of a repository

* remove unused comment codes & fix lints and tests

* remove unused comment codes

* use struct config instead of map

* fix lint

* rm wrong files

* fix tests

* track assignee for issue

* fix lint

* use getUserByID instead Get

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.

* track labels changed on issue view & resolved #542

* add missing head comment & sort & fix refresh

* Allow custom public files

* Gofmt code, lots of places not related to this pr

Moved attachments into seperate go file

* Moved attachaments POST url from /issues/attachments to /attachments

* Implemented attachment upload on release page

* Implemented downloading attachments on the release page

* Added zip and gzip files to default allowed attachments

* Implemented uploading attachments on edit release

* Renamed UploadIssueAttachment to UploadAttachment

* make releases faster than before and resolved #490

* fix comment

Signed-off-by: Manuel Kuhlmann <manuel@mkuhlmann.org>

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

* Notification - Step 1

* Add copyright headers

* Cache issue and repository on notification model

* Add model and tests for graph

* Add route and router for graph

* Add assets for graph

* Add template for graph

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

* 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

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

* Check if file is a symlink with web editor (#3687)

* editor checks for symlinks

* translate file_is_a_symlink message

* credit translation author

* fix error constant

Also address other TODOs

* serve video files using the HTML5 video tag

* lint fix: add comment to IsVideoFile

Also move duplicated code into repo.APIFormat(..)