RMW - Rumorix Mana Watcher

Rumorix Mana Watcher v1.3.1

Fixes
- Fixed non-healer mana users being shown while "Show healers only" is enabled.
- Protection Paladins, damage dealers and other non-healer specs are now excluded from the healer list.
- Added player specialization-role fallback for solo mode when no group role is assigned.
- Replaced primary-power detection with explicit mana-capability detection where supported.
- Fixed mana percentages showing normalized values such as 1% instead of 100%.
- Updated Midnight 12.1 mana percentage handling to explicitly scale UnitPowerPercent results to 0-100.
- Kept restricted/secret power values out of Lua arithmetic and comparisons.