More refining, as well as some small features that have been requested

Changelog
+ Monsters now have a small chance of dropping care packages, with care package level depending on wave

* Moved color codes of text into the language file
* Gems should now give at least 1 gem
* Gem values have been increased
* Gem toggle was changed to item toggle and now applies to the rare loot dropped by monsters
* Special abilities will no longer fire when holding bows, crossbows, or care packages to prevent accidental usage
* Baby mobs are now controlled by difficulty rather than left to the normal probabilities
* Dynamic price and dynamic difficulty equations have been adjusted
* Kit prices have been adjusted
* Food price and amounts were modified