The widget shows summary on contribution for companies or modules. Options are
limited to project type, release and metric. Stats is shown as chart. Widget is
designed to be included into any web page, the data is loaded via jsonp.
Also:
* Options for project type, release and metrics are loaded in AJAX, not coded in template
* Moved code that handles drop-down selectors into stackalytics-ui.js
Change-Id: I3373ab1a627099f380070c0e3d90164ec0096039
24816f7704