Bump to gitlab 6.3 and gitlab-shell 1.7.9
[config] Add new rack_attack and logrotate config. files
[templates] Update config. files ({init,gitlab,unicorn}) for GitLab 6.3
[setup] Remove logrotate package (not essential pkg go to requirments)
Merge pull request #81 from sbadia/6-3

To infinity and beyond^u Upgrade to GitLab 6.3