Remove unused imports
Remove unused imports
Issue #12: Update Mapbox Streets url pattern and replace MapBox Light with Dark.

The previous url patterns were returning 404s.
Issue #14: Add OAuth support files.
Issue #14: Load oauth-helper.js.
Issue #14: Use OAuth to sign in to ArcGIS Online.
Merge branch '#14/use-oauth' into develop
Issue #5: Update samples using services that are planned for retirement.

Use service area task from logistics.arcgis.com
Add a visual component to show progress of asynch service call
Add contributing links.
A simple skin class for the Navigation component that presents zoom in, initial extent, and zoom out.
Use new loader for ProgressMessage component
Sample to showcase GeoEnrichment service data coverage.
PopUpRendererSkin for a few of the geoenrichment samples.
GeoEnrichment sample to demonstrate GeometryStudyArea and GeoEnrichmentTask enrich operation.

Sample city, region, country data for most of the countries covered by the GeoEnrichment service.
Sample to demonstrate using the StandardGeographyQueryTask to obtain geography Ids from
the GeoEnrichment service.
Sample component for GeoEnrichment samples to support creating StudyAreaOptions.
Sample to demonstrate using Infographic component.
Assets for GeoEnrichment Tapestry visualization.
Sample to demonstrate using the InfographicsCarousel component.
Supporting visual assets and skin classes for GeoEnrichment Infographic samples.