VE-1639: Send AJAX request from ve.ui.WikiaSingleMediaQueryWidget and emit requestMediaDone when results fetched
VE-1639: Display search results
VE-1639: Addressing code styling issues
VE-1639: Clear search results when new query is typed
VE-1639: Clear search results when closing dialog
VE-1639: Removed unused variable
Merge pull request #5301 from Wikia/VE-1639

VE-1639: Integrate ve.ui.WikiaMediaResultsWidget into ve.ui.WikiaSingleMediaDialog