LT-15737: Make Root the Default Dictionary Configuration

- Make Root the default in the Config Dict and Pub to Webonary dlgs
- Use Dictionary directory in and remove unnecessary parameters from
  DictionaryConfigurationListener.GetCurrentConfiguration
- Reorder SelectedPublication, -Configuration, and -Reversals
  to match their order of appearance in the dialog
- Remove unnecessary Props on Pub2Web Dlg now available in Model
- Set DictionaryPublicationLayout after saving configs to
  resolve a bug discovered in testing

Change-Id: Ia98122db1240b7ef5df54e64c752217443261746