- Create the initial DrawTool view and layout methods

Issue #2180

- Add listeners for when layers are added or removed from the MapAsset
  collection and update the layers rendered on the Cesium map and the layers
  displayed in the layer list.

Issue #2180, #1923, #1775

- Still a WIP
- Make draw tool work directly with Map model, independent of widget
- Rename DrawTool to DrawToolView

Issue #2180

- Add MapInteraction, GeoPoint and GeoBoundingBox models
- Make the CesiumWidgetView methods smaller and more modular
- Move Map model attributes to the MapInteraction model (selectedFeatures, currentPosition, currentScale, and currentViewExtent)
- In MapAsset models, listen for changes to cesiumOptions and update Cesium model
- In map connectors, don't use new models as defaults to avoid instantiating new models unnecessarily
- Pass GeoPoint and GeoScale models directly to the ScaleBarView

Issues #2189, #2180, #2187

Issue #2189

Issues #2189, 2180

Issues #2189, 2180

- Still needs methods to clear the polygon and stop drawing; proper UI; testing

Issue #2180

- Add the GeoPoints collection, with methods for serializing to GeoJson
- Add a model that listens to a GeoPoints collection and updates a CesiumVectorData model with new geometry
- Use these in the DrawToolView
- Enable clearing a polygon
- Show on first click, line on second click, polygon on subsequent clicks

Issue #2180

- Switch from GeoJson to CZML (improves ability to draw around poles)
- Set up the DrawTool for actions like deleting & moving points, running a callback with user-created points as argument

Issue #2180

- Fix issues with drawing polygons, including drawing polygons over poles
- Allow drawn polygons to have properties set like other layers (color, opacity, etc)
- When drawing, draw both points and polygons
- Add CustomDataSource support
- Greatly reduce the number of re-renders Cesium must do (improve map performance)
- Add connectors between GeoPoints collection and polygons & points Entities

Issues #2180 and #2189

- In CesiumVectorData, in the new runVisualizers method, re-run in cases where visualizers are waiting for an async process to complete.
- Fixes issue with Cesium Geohashes not showing up
- Add some missing JSDocs to CesiumVectorData

Issue #2180

- Style draw tool buttons
- Hide edit & delete point buttons for now (not implemented)
- Enable configuring hiding a layer in the layer list
- Fix issue with removing entities in CesiumVectorData

Issue #2180

Issue #2180

Add an ID to the polygon created when drawing on map so that it is updated when new points are added rather than creating a new one

Issue #2180

- Set up new geo tests

Issues #2180 and #2189

- Properly switch the maps "click action" back to original setting after draw tool turned off
- Fixed delayed rendering of datasources after update (esp. Geohashes)
- Fix zooming to features on click (issue with getting bounding sphere of a feature)

Issues #2180 and #2189

Issues #2180 and #2189

- Wait to trigger catalog search until camera is moving has moved enough to be considered 'changed'
- Remove listeners in Map-Search-Filters connector
- Update some documentation
- Clean up some of the CesiumVectorData code

Issues #2180 and #2189

Fixes #2196

Fixes #2144

- Add min height to markdown sections with portals
- Also rename methods from postRender to what they do, because backbone calls these methods automatically even though this isn't documented!

fixes #2195

again after content has been loaded.

Fixes #2192

Fixes #2215

In case there is no cesiumModel created yet.

Issues #2180 and #2189