Death_Runes, Unholy Rotation, Survival Hunter, Minor Druid Fixes

[Supernuss]

Implement different rune-system (it's not perfect yet, but DK community is more than happy with it)

• determine used runes including death-runes before using them
• implement spend_runes instead of multiple spend because of interaction between runes

Fix Priority Import for Cata

Update DK Spells/Talents

• add new Unholy spells
• add mastery talents
• add new Frost spells

Add Unholy-DK Rotation

• based on WoWSims
• add lowlevel cast alternatives (before we consume blood/frost runes with festering_strike)
• add some AoE

Add Frost-DK Rotation

• based on WoWSims

Update Hunter

• fix several applications, velocities, handlers
• refactor several functions
• update Survival Rotation based on WoWSims+Resources

Update Druid

• update some aura definitions
• guardian rotation will now stay in cat regardless of aggro state (manual catweave)
• update bear rage-gain to cataclysm calculation

Add Synapse Springs Tinker and Aura (including copies)