add reseting of scanned barcodes upon reentering the scanner screen
add reseting of scanned barcodes upon reentering the scanner screen

UCSD/now-mobile,UCSD/campus-mobile,UCSD/campus-mobile,UCSD/campus-mobile,UCSD/campus-mobile,UCSD/campus-mobile,UCSD/campus-mobile,UCSD/now-mobile,UCSD/now-mobile