WowAce

Adirelle:
    - Found a way to properly identify set items without tooltip scanning so the equipment filter should be more accurate.
    - New item detection: now use our own implementation of GetItemCount that gives distinct counts for distinct equipment items.
    - Added an option not to merge incomplete item stack at merchant's, mailboxes, bank, ... (ticket #29)
    - Typo.
    - Removed the useless ammo/shard filter and reorder slightly the other ones.
    - New item filter should distinguish crafted and enchanted items now. Also added an option to ignore low quality items.
    - Fixed "compare number with nil" error in TidyBags.