Also, change ordering, add pagination, and stripe the table for increased readability.
Action column now also reads "Removed" when a user is removed from a group. Note that this does not change anything on the back-end, so if you use this data for anything else, be aware that while the template is explicit, the data isn't as explicit.
* Add pseudo foreign keys to EveCharacter model
* Ensure populate alliance is called on create
* Add unit tests for model
* Add extra signal for state removal/addition
* Add unit tests for signals
* Add tests for manager
* Add migrations
* Add sync command to admin control
* Prevent whitespace being stripped from group names
* Add documentation
