Added Chaos Damage Support

Adds chaos damage to a skill.

Gem Leveling

Level	Required Level	Required Intelligence	Chaos Damage Added	Experience to Level
1	31	42	16-25	179,320
2	33	44	18-27	225,766
3	35	46	20-30	282,073
4	37			349,759
5	39			431,204
6	41	54	26-39	528,465
7	43	56	29-43	644,165
8	45	58	31-47	782,325
9	47			945,554
10	49			1,791,769
11
12	52			1,638,338
13
14
15	55			9,826,462
16	56			21,126,787
17	57	73	51-77	50,254,966
18
19
20

Gem Quality

Each percentage of quality adds +0.5% Chaos damage.