1. Fixed cache problem that caused the pageset configuration page to blow up. 2. Rather than bomb on duplicate tab and url names for pages, …
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1. Fixed cache problem that caused the pageset configuration page to blow up.2. Rather than bomb on duplicate tab and url names for pages, which can arise when deleting then adding pages as well as admin-provided names, "uniquify" them. The admin can, of course, then rename them to something more reasonable if they want.
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