Decrease penalty -50% to -30% when promoting to advanced and elite.
Decrease the health gain to 10%. (20% health + 1 armour);
Increase the crush damage for axemen as well (Previously they only got a penalty)
Patch by: @borg-
Reviewed by: @Nescio, @Feldfeld, @badosu
Differential Revision: https://code.wildfiregames.com/D2792