Get all children URIs in a single query when moving a folder.
Get all children URIs in a single query when moving a folder.

nfo:belongsToContainer isn't used since at the moment the data in there
is not actually reliable.

outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker