Sets up the hideGraph property [#44392071]

The property can be added to an animation in runtime JSON, and will be included with the animationInfo object. Also, CSS added to hide non-animation parts of a graph if the hideGraph class is on a parent div.

Conflicts:
	apps/smartgraphs/resources/css/style.css
Makes GraphView respect the hideGraphs property

If an animation includes 'hideGraph: true' this will add a 'hideGraph' class to the DOM which uses CSS to hide the graph, but not the animation. For [#44392071]
Removes "no graph" text from Describing Velocity

Previous commits make this text superfluous, for [#44392071]