Web AppBuilder Scalebar widget enhancements

Idea created by hrastche on Jan 21, 2016
    Dear Web AppBuilder team, 

    In Web AppBuilder 1.3 the Coordinates widget was made much more readable by putting a dark background on it. Please consider making the Scalebar widget more readable in a similar manner. 

    Also it would be great to have configuration options to show the actual scale and zoom level near/above the scale bar.