Added Fire Damage Support

Adds fire damage to the linked skill(s).

Gem Leveling

Level	Required Level	Required Strength	% of Phys Damage Added as Fire Damage	Experience to Level
1	15	22	30%	28,130
2	18	26	31%	47,943
3			32%
4			33%
5			34%
6			35%
7	33	44	36%	359,090
8			37%
9	40	52	38%	755,049
10	43	56	39%	1,426,490
11			40%
12	49	63	41%	1,964,019
13			42%
14			43%
15	55	70	44%	9,930,867
16	56	72	45%
17
18
19
20

Gem Quality

Each percentage of quality adds X.