Fix card damage fixing - Fixes bugreport:7935
Fix GVG and Card reductions for skills that use separate damage calc functions
Removed some unnecessary code causing attack underflow in homunculus - Fixes bugreport:7925
Update Feint Bomb damage formula to 2011 rebalance - Concering bugreport:7912
Update Siren's Voice to 2011 rebalance formulas - Fixes bugreport:7878