Used python json lib on fileupload contrib
Used python json lib on fileupload contrib

jeanmask/opps,williamroot/opps,opps/opps,jeanmask/opps,jeanmask/opps,YACOWS/opps,jeanmask/opps,williamroot/opps,opps/opps,williamroot/opps,YACOWS/opps,YACOWS/opps,opps/opps,YACOWS/opps,williamroot/opps,opps/opps