improved attecktable tostring
fixed getMissChance, working on crit.
combat test creates 3 mobs with leveles 79-81 and a char.
see prev commit, forgotten to commit libWowCombat.js
Combattest restructured and added verystrong mob for crushing blow test.

Crushingblow implemented
Added the 5 base-attributes to combatant, with base- and effective- getter.
Added def as optional arg to Combants constructor for initializing fields like base-strength.