EXT-8205 FIXED (Items in \"Add more\" panel are not sorted by name)

- Modified LLWearableItemTypeNameComparator so that it can be more reusable and adjustable

- Set LLWearableItemTypeNameComparator for WearableItemsList ('List view' of 'Add More' panel) due to sort clothings by name

- Modified and applied patch form https://codereview.productengine.com/secondlife/r/620/diff/2/#index_header. This patch was discarded because specification was changed

Restored diff after bad merge at 13817

Reviewed by Vadim Savchuk at https://codereview.productengine.com/secondlife/r/765/

--HG--
branch : product-engine