Add DB support for the AA Seq numbers

The seq numbers can now be loaded from the DB with this change. The client uses them for /alt act # and direct AA hotkeys, so creating them based on a sort by AAID lead to changes each time an AA was added, requiring the client to recreate the hotkeys.

There is no need to set all seq numbers, the server will still generate a number for those that have it set to 0. Only the activated AAs should have it set so that they no longer change when new AAs are added.