Now we track whether an adjustment uses areas or not.
Now all adjusted images based on the same storage path are deleted when a new area is defined (for fill and crop).
Now the adjusted images also are deleted when you delete an area.
Fixed the tests and now it passes tox!
Fixed broken image files causing uncaught errors.
Pass *args and **kwargs to the super call on save(), for consistency.
Changed the super save/delete other adjusted img call order and DRY-ed it up a bit.
Added a blank line.
Merge branch 'master' into ticket/41
Added tests for deleting adjusted images for areas.
Merge branch 'ticket/41'
Minor tweaks to previous PEP8 work.
PEP8-ified tests.
Merge branch 'master' into issue-37

Conflicts:
	daguerre/models.py
	daguerre/tests/unit/test_views.py
	daguerre/utils/adjustments.py