* Fix escaping changed title in comments

* Fix escaping of wiki page titile

Signed-off-by: Lauris Bukšis-Haberkorns <lauris@nix.lv>

* Serve .patch for pull requests

Closes #3259
Updates "git" module, for GetFormatPatch

* Handle io.Copy error

* Serve pull request .diff files

Closes #3259

* Add test for pull request redirection and .diff access

* Typo

* There's no need to test for pr.BaseRepo being nil after calling GetBaseRepo

* Integration test for activity page

* Small code refactoring for acitvity page

* Move activity stats calculation logic to model

* Fix so that user can still fork his own repository to his organizations

* Fix to only use owned organizations

* Add integration test for forking own repository to owned organization

* More tweaks to repo top panel

* undo hiding of compare button on master

* attempt to fix ci issue

* another ci attempt

* Helper functions for intergration test boilerplate

Set request headers in helper functions, and new helper for requests with string-formatted URLs

* Make branch deletion URL more like GitHub's, fixes #1397

* Add PR branch deletion integration test

* Do not allow deleting protected branch

* Change http error code to 403 if user has no write rights to repository

* Add check to not panic if forked repository has alrady been deleted

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