Give demonologist demon seeds that generate stamina

[EatThisShoe]

Currently demonologists have terrible stamina regen, and only one skill, in a locked tree, generates stamina. Demon seeds for fingers currently all generate vim, while there are a few variations, there are still plenty of seeds which do the same thing, sometimes strictly better than other seeds. So replace some of the redundant effects with stamina regen allowing players to customize their regen to their taste trading vim generation for stamina if they so desire.