Move existing site utility code to utils instead of models.
First pass at tracking translation updates.
Update TranslatableMixin to create TODO records when items are updated.
Fixes to the TODO creation and first pass at listing all TODO items.
Disable the delete action and add action to mark items as resolved.
Include the initial migration for the translation TODO items.
Tests for the creation of TODO items in the admin. Fixes for deleting items.
Change the name of the field label from create to date.
Restore the site permission selection in the user admin.
Make sure the checkbox isn't wrapped in a link since Firefox will follow the link if the checkbox is clicked.
Don't create additional edit TODOs if there are existing unresolved ones for the page. Resolve other existing TODOs when an item is deleted.
Merge pull request #154 from mozilla/146-translation-todos

Translation TODOs