Add validation to command reference code xibosignage/xibo#1106
Add validation to command reference code
xibosignage/xibo#1106

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