Spell cosmetic fixes
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[*]Various spells show "Ok." on success (detect invis, detect magic, detect hidden, and a few others). Since these can't normally be cast on others, these OK messages only showed up when bard song containing them was played. Now fixed.[*]Various "Spell failed" messages were removed.[*]Several other cosmetic fixes, e.g. "You must be out of doors" on failed call lightning, as well as a few missing periods.
[list][/list]
