Render charts from storage instead of just one ad-hoc hard-coded chart
Ref T13279. This changes the chart controller:
- if we have no arguments, build a demo chart and redirect to it;
- otherwise, load the specified chart from storage and render it.
This mostly prepares for "Chart" panels on dashboards.
Test Plan: Visited /fact/chart/, got redirected to a chart from storage.
Reviewed By: amckinley
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20483