Added start to grid master/detail sample
added link to index page & cleanup
Updated igniteui-angular.js to handle feat events

Before this update as a directive is being processed (extractOptions
function) the grid feature events that were being subscribed to were
missing the full name of the event - thus never really subscribing the
event.

This fix ensures that the fully-qualified event name is used to setup an
event handler.
Fixing an issue where the grid needs to be re-bound when the data source is changed.
Fixing JSHint validation.