Whats Next? 0.17.3

UI usability pass:
- Tasks: clearer NEW TASK field with visible helper text and larger native input/button.
- Loot Tracker: character/spec moved to a dedicated first row; loot filters moved below; BROWSE ALL LOOT and MY SELECTED LOOT are now large, clearly labeled view buttons.
- Tank Assistant: added a clear HOW TO USE block and rebuilt anchors to prevent controls/header overlap.
- All new controls continue to use Blizzard templates, GameFont objects and UIParent scaling only.
