upload/download vs moin item-get/item-put
currently we don't save meta from an item if we call download. We do this on cli by item-get.
Also for uploading we don't require a meta file.
As long we had only one itemtype this was a different problem. A downloaded blog entry becomes only a blog entry if there is an entry in itemtype.
If some meta is available for an item it should be possible to upload that too