Merged
requested to merge robert.ancell/gnome-control-center:region-input-chooser-widget into master
- Use GtkTemplate
- Remove private structure use a final type
- Rename .ui file to match .c file
- Move more code into the .ui file
- Don't save the dialog between runs - it's cheap to generate on demand
- Hold references on data passed to dialog
- Connect signals in "swapped" form