Add ability to enable public clone via git
Add git protocol to clone panel
Fix implementation of git protocol show and edit in admin section
Fix Abilities
Merge branch 'feature/add_support_git_protocol' into new_staging

* feature/add_support_git_protocol:
  Fix Abilities
  Fix implementation of git protocol show and edit in admin section
  Add git protocol to clone panel
  Add ability to enable public clone via git

Conflicts:
	lib/gitlab/backend/shell.rb