DruidUpgradeInv.uc change committed

It now handles:

Have DruidAwareness and no class? You become a WM.

Have DruidAwareness and are a Medic? DruAware gets replaced by MedicAware. Unfortunately, for the change to properly replicate, it's easiest to just call Instigator.Controller.Destroy() (which disconnects the session) and the player can then reconnect safely.

Dru, obviously you will want to review this before using it.