EXT-7613 FIXED Provided updating of base outfit name on outfit rename event.

1 Updated LLOutfitObserver to provide controlling of changing outfit name.
2 Added call of LLPanelOutfitEdit::updateCurrentOutfitName to LLPanelOutfitEdit::updateVerbs since both should be called on BOFChanged signal.
3 Corrected updating field LLOutfitObserver::mBaseOutfitLastVersion.

reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/553/

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branch : product-engine