DDF-821 , DDF-955 - added disabled applications attribute to the Admin UI metatype

-The implementation of the Admin UI metatype.xml seemed incomplete... so I just completed it and added my new attribute to it.
-also and fixed feature start/stop bug I noticed.  the events were not being propagated.
Merge pull request #54 from McLucas/feature/DDF-821

DDF-821 , DDF-955 - added disabled applications attribute to the Admin UI metatype