Deleted unused files and files

The list method in models/base.py can now use a filter to make a selection of entities to show. Patch by: Lennard de Rijk

Moved the last remnant of soc.views.user.profile to soc.views.models Sadly, it is non-trivial to port this code to be generic enough to work with soc.views.models.base.edit. On the other hand, this will make customizing the editSelf code a lot easier.