Flesh golems and promotions

[joseasoler]

Check if flesh golems can adquire Lucian's Strong promotion, and what happens if they do.

Additional promotions added by any of ExtraModMod components, such as Orc Slayer or Divided Soul also need to be checked. Flesh Golems should not be able to use spells such as sever soul (given that they do not have a soul).