Fix 2H weapon in left hand and critical damage

[oma012]

hi, this JS fix the bug that led you use a two handed weapon in the left hand if you have dualwield, and a JS that let you set a critical damage multiplier.

i working in set critical damage to each type of wepon but i had a problem to know witch weapon are dealing damage if the actor have dialwield. if some one know how know it please help me.