Feature Request: Place "Edit in safe mode" in notebook actions

I managed to break a notebook so bad that the “edit in safe mode” warning never came up, and refreshing the notebook would not load any of the code.

It’s easy enough to get to safe mode if you know how (append “/safe” to the notebook url). But it might be convenient to have an “Edit in safe mode” option in the notebook actions drop down, for situations like this.