EXT-7779 FIXED Changed wearing panel from inventory panel to a flat list...

EXT-7779 FIXED Changed wearing panel from inventory panel to a flat list similar to My Outfits view.
- Added common interface for My Outfits and Wearing tabs.
- Changed LLPanelOutfitsInventory to use common interface for My Outfits and Wearing tabs.
- Removed dependency on outfits side panel from inventory bridge context menus.
- Removed unused LLShowCreatedOutfit class from llagentwearables.cpp.
- Restored opening newly created outfit in My Outfits tab.
- Fixed worn items indication for Wearing tab items.

Revieved by Neal Orman at https://codereview.productengine.com/secondlife/r/604/.

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branch : product-engine