Reorganized admin interface, added new models for

departments and divisions.
Django admin was customized to client specs
Modified the URLImage model to make inputing

resources more intuitively. Images now have a foreignkey
to resources.
Merge remote-tracking branch 'origin/master' into improved_admin

Conflicts:
	fabfile.py
Implemented colin's feedback to improve admin interface.

Ordering of resources, departments, divisions now have
a sane default. Departments and divisions are ordered by name.
Resources are ordered by last modified. Long labels for
resource listing page have been removed.
Merge pull request #34 from openrural/improved_admin

Improved admin interface.