TODO

   1 ClientPutComplexDir
   2 ClientPutDiskDir
   3 GetPluginInfo (since 1075)
   4 GetRequestStatus
   5 PutFetchable
   6 PutSuccessful
   7 RemovePersistentRequest
   8 SubscribeUSK
   9 UnknownNodeIdentifier
  10
  11 ManageNodesDialog
  12 * prevent deletion of currently connected nodes
  13