This PR also includes adding and removing the layers to the layerControl widget. This new layerControl functionality is in the develop branch for cmv-app. This uses topic.publish to add/remove the layers so it will be ignored with older versions of the layerControl widget or when the widget widget is not included in the application.
This PR also includes adding and removing the layers to the layerControl widget. This new layerControl functionality is in the develop branch for cmv-app. This uses topic.publish to add/remove the layers so it will be ignored with older versions of the layerControl widget or when the widget widget is not included in the application.