Probability calculations incorrect in places

[alfalfascout]

• [x] Sometimes, the ability calculation returns NaN. While funny, it shouldn't do that.
• [x] pushResults() can return probabilities of over 100%. The maximum should be 100%, and the probability calculations should be rewritten to make sure they're accurate.
• [x] Actually, every probability calculation is likely to be wrong because I'm not stellar at probability. Double & triple check all of them.
• [x] The user likely doesn't need to see a ton of decimal places. Cap their output in pushResults() at 4 or some similarly small number.

[alfalfascout]

Ability and gender calculation won't get much better unless I put an on-site pokedex with a list of abilities, recognition of hidden abilities, and gender ratio for each pokemon species. That could be up to 700 pokemon, though. I'll make that a version 2 feature, I think.