Egos here we go

Oh yes, those juicy rerolls by opening a levelup dialog. Well, no more. Hopefully.

Small fixes

I'm not bothering repeating commit messages!

Cursed aura

* No more artifact transposition when cursed sentry dies.
* Ammo matches the archery weapon in quality now.
* Remembers your choice of weapon after the first time, you can alter the choice with a helper talent. (Yes, that IS old Command Staff icon. It's not used anymore!) Actually not annoying to use mid-combat!
* Levels up its stats to be more damaging.