make db queries protocol-agnostic
add ChartController
add ChartController.js
implement chartController
Merge branch 'master' of https://github.com/bicyclerace/bicyclerace.github.io into refactor_popup
Merge branch 'master' of https://github.com/bicyclerace/bicyclerace.github.io
add parentController get/set
merge
basic chart
Merge branch 'master' of https://github.com/bicyclerace/bicyclerace.github.io
Merge branch 'refactor_popup'