Ordering weapons into onehanded and two handed, Adding damage and material methods

Github bug with BattlegearRenderHelper. I didn't touch, but maybe you should check before merging this.
Mace and Dagger are now OneHanded, while Spear and Waraxe are TwoHanded.
Added damage calculation, with chance of critical for waraxe.
Wearing two identical one-handed weapons gives a special effect.