* 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
Ethan Koenig
Lunny Xiao
Denis Denisov