Event generation upon creation/modification/deletion of federated files

* Deletion of existing nodes with children doesn't report the deletion of children, maybe that's ok.
* Depending on the order of occurrence modify events can be sent out for newly created directories, I chose not to propagate those as node events.
* Doesn't capture rename events, instead it appears to be a deletion and then an creation (includes subdirectories).

Questions:
   * If I delete a directory which has child nodes, should each child node issue a DELETED event?