WaterSmart-404: Display a loading spinner while the WFS is loading. Used
a controller scoped associative array (needed a dot) to hold the map
loading boolean and forced a digest cycle to update the DOM. Also some
minor code reformatting.
Merge branch 'master' of github.com:USGS-CIDA/nwc
Merge pull request #168 from dschmitt-usgs/master

WaterSmart-404
WATERSMART-439; refine initial commit
Merge branch 'master' of https://github.com/USGS-CIDA/nwc into WATERSMART-439