GITLAB v2.9 release

Created by: dzaporozhets

Just to help tracking fixes for new version

• fixed inline notes bugs
• refactored rspecs
• refactored gitolite backend
• added factory_girl
• restyled projects list on dashboard
• ssh keys validation to prevent gitolite crash
• send notifications if changed premission in project
• scss refactoring. gitlab_bootstrap/ dir
• fix git push http body bigger than 112k problem
• list of labels page under issues tab
• API for milestones
• restyled buttons