Extended users API to support updating and deleting users.

Also added tests.
Update config/database.yml.postgresql

This was necessary following the installation guide for ubuntu 10.4 with postgres
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
commit user team helper
save commit
Rename Team class to ProjectTeam
fix simples errors in tests