#214: updated #branches page, integrated AngularJS
#214: removed unnecessary code
#214: added ability to destroy branch
#214: create GitHook on delete of branch
#214: updated logic of deleting of branch
#214: refactoring of views
#214: updated UI of PullRequest#show
#214: fixed restore of branch
#214: remove unnecessary code
#214: updated PullRequest API
#214: added skip_authorize_resource for TreeController
#214: removed unnecessary specs
Merge branch 'master' into 214-delete-and-restore-branches
#214: refactoring of JS
#214: added DateTime formatter
#214: updated locales of branches
#214: some refactoring of JS, added comments
#214: added specs for TreesController
#214: added specs for Project #restore_branch && #delete_branch
#214: updated Gemfile.lock