DDF-939 - Added Platform UI Configuration with Web Service

-Added new metatype to the existing metatype.xml
-Added bean to spring configuration as well as the jaxrs server to expose
the configuration.  url is services/platform/config/ui
-brought it dependencies I needed for json output.
-fixed some checkstyles I noticed while working the ticket.
-added some unit tests
Merge pull request #20 from McLucas/feature/DDF-939

DDF-939 - Added Platform UI Configuration with Web Service