Changed FontAwesome submodule to use HTTPS instead of SSH.
Added initial example data for Department and Category Groups.
The ticket add form now works, even when the current user is not in a department
Fixes #122
The Department class now correctly checks foreign keys

We were not checking all possible foreign keys before.  This had to be a raw SQL command.
Fixes #121
Fixes for ActiveDirectory LDAP connections
Added tests for ticket->save
Merge branch 'origin/master'
Merge branch 'origin/clustering'