WhatsNext 0.17.7

Equipment Loot Test:
- Three fixed priority positions inside every source cell: WANTED, HIGH, BIS.
- Visual order left-to-right is WANTED, HIGH, BIS (right-to-left BIS, HIGH, WANTED).
- Added MAIN HAND and OFF HAND equipment rows.
- Replaced Unicode check/bullet glyphs with Blizzard UI checkbox textures in item overlays and menus.
- Existing Loot Browser and My Loot remain unchanged.
