Added key ability cell to abilities table on demo.html; Added name property to Ability class; Added getters and setters for ability modifiers to Character class so skills related to each ability can stay updated; Added code to set abilityModifier property of new Skills in setClass function
Made ability modifier cell read only in abilities table in demo.html; Changed getTotal function in Base to use forEach instead of for loop; Changed setClass function in Character class to use forEach instead of for loop