add Content-Type check as the desktop sync client is quite touchy about this
add Content-Type check as the desktop sync client is quite touchy about this

cernbox/smashbox,labkode/smashbox,nickv-oc/smashbox,mrow4a/smashbox,nickv-oc/smashbox,cernbox/smashbox,labkode/smashbox,labkode/smashbox,owncloud/smashbox,switch-ch/smashbox,labkode/smashbox,owncloud/smashbox,mrow4a/smashbox,switch-ch/smashbox,cernbox/smashbox,cernbox/smashbox,owncloud/smashbox,nickv-oc/smashbox,switch-ch/smashbox,mrow4a/smashbox