Fix changing a dataset column datatype xibosignage/xibo#1184
Fix changing a dataset column datatype
xibosignage/xibo#1184

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