Added initial 'tooltip' architecture for user stats
added "usergroup" Rest API
Added tooltip user popups.  Still needs work
fixed issue where user tooltip wouldn't close when link was clicked
misc fixes
added the user popup to the piechart legend as well
Fixed divide by zero issue with likes-to-posts ratio, and removed wordcloud shit for speed reasons
some legend improvements
Removed list of users
fixed CSS for user popup
Forgot to add userpopup graphics.  Also, abstracted out the user popup logic to a seperate function
Merge pull request #38 from bstascavage/userlegend

Userlegend