CDB-1096 #resolves Fixes a bug that disabled the legend pane when selecting an intensity wizard
Check the mapbox json file instead of the sample png
Sets minZoom to 0
Sets min zoom of our default layers
Removes minzoom from gmaps layers
Merge remote-tracking branch 'origin/fix/CDB-1096' into release/2.5.4
Merge remote-tracking branch 'origin/fix/CDB-1099' into release/2.5.4