Improve Rendering Performance [Experimental]

[ingalls]

Context

At this point our performance of rendering large point datasets ourperforms WebTAK significantly but I think there is more optimization that can be done. The map still becomes sluggish when rendering an in-browser GeoJSON layer such as lightening data.

Actions

• Strip out all but style properties when GeoJSON is added to map
• Perform a "Style & Geometry" diff before submitting to Diff update code, if there is no visual diff, just update the CoT store and skip re-render
• Ensure all map interactions get the actual feat from the CoT Store. The returned feat from the map should only be used as an ID reference to the store - see above where the properties could lag behind the store if there is no visual difference