FORMS-253 #time 1h 45m Clean up events so that higher-level items are added properly.
FORMS-253 #time 1h Starting on preview.
Removed data deletion warning on form edit.
Previous changes
FORMS-253 #time 2h 45m Making preivew work for two levels. Still need to make it work for n-levels.
FORMS-253 30m Make previews work for all levels.
Merge branch 'master' into formbuilder