Fix duration filter for library xibosignage/xibo#1167
Fix duration filter for library
xibosignage/xibo#1167

dasgarner/xibo-cms,guruevi/xibo-cms,xibosignage/xibo-cms,xibosignage/xibo-cms,dasgarner/xibo-cms,dasgarner/xibo-cms,xibosignage/xibo-cms,alexharrington/xibo-cms,xibosignage/xibo-cms,PeterMis/xibo-cms,dasgarner/xibo-cms,alexharrington/xibo-cms,guruevi/xibo-cms,xibosignage/xibo-cms,dasgarner/xibo-cms,alexharrington/xibo-cms,PeterMis/xibo-cms,dasgarner/xibo-cms,guruevi/xibo-cms,PeterMis/xibo-cms,PeterMis/xibo-cms,alexharrington/xibo-cms,alexharrington/xibo-cms,PeterMis/xibo-cms,xibosignage/xibo-cms