Remove Meta systems to make way for the Monkeybot Intelligence Bureau
Add backup tag meta system for use ONLY when monkeybot is offline
Add messages whenever someone links an issue, or says "Denizen #5" etc
Switched to GitHub OAuth tokens btw
Add ".math" to test Denizen's <math:x+y> tag. (Ex: .math 4*3+2)
Add ".realmath" to test complex math statements via WolfRamAlpha (Ex:  .realmath x = 4; y = 2x^2; x + y)