Merge pull request #250 from KayenEQ/Development

Nimbus Updates / Other fixes
QGlobalCache::LoadBy to pass by reference
Mob::ProcessSpecialAbilities pass by reference
Implement spell formula 137

This is only used in the BER AA Desperation
Fix for LoadBuffs() server crash
Fix some effect value calcs and implement more

Derived from the client
Fix for calculation for SE_ManaAbsorbPercentDamage