Dawnsbury Days 4.17 (signature metamagic spells hotfix)

[p]Fixes a regression introduced in 4.15 that caused the game to crash if you attempt to cast a signature spell while having a metamagic feat applicable to that spell, and in some other more rare situations. [/p][p]I'm sorry for the multiple hotfixes for this Friday's update. It contained a couple of deep redesigns.[/p]