DDF-818 Fixing various bugs contained in the Configuration page

* Switched the backing architecture to the configuration page from Relational to Assocation.
* Fixing an issue where adding a non-factory configuration was causing an entry to not be added to the list.
* FIxing several refresh issues where bad / stale data was being shown.
* Fixed an issue where adding a new entry to the list would not cause the modal to reappear.
It looks like the show function will ignore the appName parameter that is passed in if self.appName is already set. Is that what you really wanted?