Fixed exception on post syncdb

[synasius]

Using a database backend other than sqlite you get the followeing error on post-syncdb processing:
django.db.utils.DataError: value too long for type character varying(50)

This happens because Django use the verbose name of the models (which is too long) to create the permission description text in auth_permission.

[yakky]

Ouch, we just pushed the same fix at the same time :)
Merge manually yours