Add ability to disable automatic model state change

[oowowaee]

I have a use case where in some cases I want to open a modal when the toggle button is selected and only change the model when a button is selected in the modal.

It doesn't seem like there's any way to bypass the ng-change=model.attr = !model.attr, however.

[andreaslarssen]

+1.

Need the user to confirm the toggling of the switch.