Archarodim:
	- Reset MUFs' window auto-hide setting to 'Never' if the user shows or hides the window manually.
	- Modified two setting phrases (again) to clarify their meaning: OPT_CUSTOM_SPELL_ALLOW_EDITING and OPT_CUSTOM_SPELL_ALLOW_EDITING_DESC
	- Prevent the MUFs' window from being hidden while testing layout.
