Expand support within the Bar for other specs.

Implement bare-minimum text, current resource value, and minimal configuration options support for previously unsupported specs:

Death Knight

• Blood
• Frost
• Unholy

Demon Hunter

• #344

Druid

• #326

Evoker

• #259
• #280
• #312

Mage

• Arcane
• Fire
• Frost

Monk

• Brewmaster

Paladin

• #349
• Protection
• Retribution

Priest

• #324

Rogue

• #285

Shaman

• #283

Warlock

• #388
• Demonology
• Destruction

Warrior

• Protection