Introducing 'PeerSite' object.
Removing remote+disabled projects from browser widget.
Removing disabled sites from user Data Cart.
Removing obsolete code.
Not checking data cart at sites that are disabled.
Fixing problem with ProjectImpactFormSet.
Merge branch 'devel' into luca
Removing disabled projects from list of possible peers, parents.
Displaying data carts with zero size.
Using drop-down for datacart.
Renaming the cogadmin index to projects.
Inserting page to manage peers.
Merge branch 'luca' into devel