Highlight layer in layer widget
Set widget from selection.
Add start of saving logic.
Add layer filter for select layers and combobox
Save version, title, description, select layers.
Tweak UI
Set the first project as active
Backup projects on load.
Saving of selection layers
Saving of selected field
Saving of form type
Set and save required flag
Move saving logic to __main__

Update widgets model to handle instances of widgets.

Move Add and Remove buttons.
Load possible widget types from Roam
Fix icon loading
Save required on the widget.
Fix crash on widget data change
Tweak UI font and style.