Prepwork for more flag refactoring, and some initial changes promted by bug report: https://github.com/herp-a-derp/Corruption-of-Champions/issues/91
Named a bundle of flags.
First pass at breaking combat monsters out into sub-classes. Only the imp is separate at this point, but it works!

Also, set the flags as public. Which is *probably* not needed, but the actionscript include mechanics confuse me.