Bug Fix 2486 and 2530
Merge branch 'master' into avaneesh
Bug fix 2527
Emergency fix to test mode.
Fixing a bug in description text for problem 7 of ps 3.
growth of terrorism bug
Merge branch 'master' of https://github.com/bvds/LaitsV3
Merge branch 'dillanbutler'
Fixed a bug where an unnecessary node was not marked as extra.
EB3 fix
Rounding decimals to 3 places for the graph to render properly
Adding the hint slides for ps-04 problems
Changing the image extension for the hint slides
removing the typo in the images name
problem 2 set 4 bug from document
Hacked together a new leaderboard.  Doesn't affect existing dashboard code.  Can be disposed after experiment is over.
Merge branch 'jonwetzel'
Selecting the tutor section only for leaderboard.
Changed colors in the new leaderboard.
Clarified new colors leaderboard, and changed display to percents of correct responses.