EXT-7755 ADDITIONAL FIX Fixed issues with wrong title after an outfit from the...

EXT-7755 ADDITIONAL FIX Fixed issues with wrong title after an outfit from the Inventory is worn, "Wear..." menu items state is made consistent with "Wear" button.

* Empty string is replaced with "Changing outfits" while changing COF;
* Fixed title to show "No Outfit" after an outfit from the Inventory is worn;
* Fixed bug with visible indicator after an empty folder is DnD from the Inventory "Clothing"
* Updated context and Gear "Wear..." menu items to take into account "isCOFChangeInProgress" state in on_enable callbacks

Reviewed by Neal Orman at https://codereview.productengine.com/secondlife/r/625/

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branch : product-engine