Deleting a user can leave an undeletable group

[martindholmes]

If a user is the sole member and manager of a personal group, and the administrator deletes the user, then the group remains and cannot be deleted by conventional means (through the JNLP client or through XQuery). The discussion thread on exist-open is here:

http://exist.2174344.n4.nabble.com/sm-remove-group-groupname-fails-tp4662591.html