fixed missing column errors on leaderboard, added </body> tag to try and make djdt work
Merge branch 'dev' of https://github.com/greenstreetsinitiative/checkin into dev

Conflicts:
	leaderboard/templates/leaderboard/leaderboard_js.html
leaderboard skeleton draft
added new modes to matrix, clean up leaderboard skeleton
updated leaderboard filtering, added subteam option
leaderboard table cleanup, added matrix labels
updated canvasjs to 1.3
added leaderboard summary cards
stop commenting out the js
Merge branch 'dev' of https://github.com/greenstreetsinitiative/checkin into dev
moved </body></html> to base template, updated layout classes for leaderboard tip
validates form data before showing optional questions
implements caching routine for commuter survey
fixes survey data model class
Merge branch 'dev'