* Render right layout depends on current_user
* show sample git username/email when repo is empty
* Show extra info when browsing public area
* Fixed some tests related to public projects
* show comments in read-only for public projects
* Remove old public routing

switch to use link_to_member to prevent 500 if user is a project owner but does not have membership and leave comment

Didn't bother with files in db/, config/, or features/