Ckozak/gutterball mongodb

Yeah I'd rather remove Event from the method names . There's a lot of events going on here :)

EventHandler
eventType
event.getType()
handleUpdateEvent(event)

```
EventHandler handle = targetHandler.get(event.getTarget());
if (handler != null) {
   String eventType = event.getType();
   if (MODIFIED.equals(eventType)) {
      handler.handleUpdated(event);
```