Added new class ModuleConfigDataEvent which is now fired by adding/removing hash sets.
KeywordSearch module now also fires ModuleConfigDataEvents.
Also fire config data event for imports.
Remove config event support from IngestManager. HashDb and KeywordSearch modules now have public interfaces for prop change events.
Cleanup and comments.
Merge pull request #428 from SynapticNulship/configEvent

HashDb and KeywordSearch ingest modules now have public interfaces for prop change events.