Implement simple way of adding Call-Forwards.
Implement CF deletion and visual cleanups.
Add Advanced CF mock.
Add playground sandbox.
Add time/destination set selectors.
Add own RepeatableJS renderer.

We don't pop up a JS confirm dialog on deletion of a repeatable row.
Add advanced time/destinations set buttons.

Also align them in one row in the modal footer.
Implement destination set handling.
Handle assigning of multipe sets in CF mapping.
Fix handling of multiple mappings per CF type.
Fix destination/period alignment.
Some cleanups using preference helper.
Properly set close target for correct work-flow.
Properly set voip_usr_preferences on CF changes.
Implement deletion of CF destination sets.
Add basic timeset handling for CF.
Fix deleting active time sets.
Implement time/destination set creation for CF.