* change display of configuration; use tabbed groups
* cast warnings hide properly when a cast is interrupted
* cast warnings minor performance improvements
* cast warnings allow disable/enable without ui reload
* fix modules always loading enabled regardless of configuration
* bump TOC to 50200
* move config change handlers out of layout.lua
* modules call InitModuleOptions manually
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* cast bar options will have no effect as i moved the profile from self.db.profile.* to self.db.profile.display.*