Angular Colorpicker

An angular colorpicker for use with angular views. Fashioned after [jQuery Minicolors] (https://github.com/claviska/jquery-miniColors/).
Aha, that seemed like a terribly obvious error in the old code. I'm glad I was wrong.

It is indeed intended to remove some alphabetical characters. G-Z aren't included in hex values, and it might cause errors if the hex to hsb method attempted to parse `#000Z00`. It would be better to turn `#000Z00` into `00000` and realize it isn't a valid hex value.