Fixed not working "Create New User" view which was caused by adding key_name into User Edit Developer view. This commit divides edit() view function in soc.views.site.user.profile into edit() and create() request handlers. New create() request handler is used only in "Create New User" view and has specific form validation functions and uses updateOrCreateUserFromId() instead of updateUserForKeyName(). Patch by: Pawel Solyga Review by: to-be-reviewed

Add ModelWithFieldAttributes *before* PolyModel, so that everything does not become a "ModelWithFieldAttributes" in the Datastore. The way PolyModel works, each Model class hierarchy is stored in the Datastore as the class that directly inherited from PolyModel. So, we do not want to insert ModelWithFieldAttributes *after* PolyModel by inheriting *from* PolyModel, or everything would just be a ModelWithFieldAttributes in the Datastore, instead of Person, Work, Group, etc.

Add the third-party PolyModel class. This class supports inheritance in Google App Engine Datastore Model classes.