Manager: Add a method to reload the DB from disk on demand.
ds2-dump: Generate a more useful exception if no port is specified.
ds2-dump: Sort control unit list by name.
ControlUnit: Unify member naming convention.
DPP: Store UUIDs as binary data, use convenience functions to translate.

This shaves nearly 20 kilobytes off the size of the DB with only a few
modules.  Also use convenience functions for setting/getting values
on a QSqlRecord.
Split out string table names into a separate SQL table.
DS2Packet: Blow up on invalid data before Qt gets a chance to.
Manager: If we can't write a packet, return an empty response.