add DataPoint activeadmin registration; add timestamps to data point model
initial stab at making a json / humon editor form for data points in active admin
add custom javascript to active amdin via initializers/active_admin register_javascript calls; refactor application.js into dependencies.js and sysys.js; remove spec.js.coffee dependency on vendor/moment since we're now relying on the gem
update HumonControllerMixin and HumonEditorView: didCommit now passes the json of the root node; hev automatically updates its json attribute
update data points controller: posts json to controller successfully; refactor into admin/form.js.coffee (semi general solution)