Added support manage access to repositories via git protocol

Not work without PR https://github.com/gitlabhq/gitlab-shell/pull/19

Add ability to use access to repositories via git protocol (without authorization)

Public project edit page:
![Public project edit](http://puu.sh/2lD1Q)

Public show page:
![Public show](http://puu.sh/2lDeQ)

Public page (list of public projects):
![Public page](http://puu.sh/2lD4a)

Admin page (little part %) ) :
![Admin list](http://puu.sh/2lD6v)

Admin project show:
![Admin show](http://puu.sh/2lD8I)

Admin edit page:
![Admin edit](http://puu.sh/2lDa3)


More description later