Allow upload for GP widget in Web AppBuilder

Idea created by LANDVEST on Feb 4, 2015
    The Flex viewer allowed for this functionality. In the Flex viewer, GP widget would accept data file inputs from URL as well as location local to the user's device.

    In the JavaScript Web AppBuilder, the data file input only accepts URL locations.

    For GP tasks which were designed to support a workflow which allowed a user upload locally created/collected data (ex: a zipped shapefile), the WAB does not support this workflow.