Extended users API to support updating and deleting users.

Also added tests.
Don't setuid the repositories on installation
Don't setuid the repositories (Rake checks)
Fix gitlab:check recommendation

Running the recommendation would give out:
GNU find: paths must precede expression
Update config/database.yml.postgresql

This was necessary following the installation guide for ubuntu 10.4 with postgres
User can create group
Added UserTeam core models (team and m-t-m relationships) and updated other models
Admin teams section added
Add teams into Public sections
Add ability to teams
merge into public
Team core management
Team members public section
Team projects public section
add dashboard teams block
add teams application controller
update stylesheets (for teams block)
add into user decorator (presenter) to full user name
update projects show css selector
add user team factories