API Let update interval of tinymce be changed or disabled

This is necessary because some optional plugins do not work with auto-update and it's necessary in some cases to disable it.
I *think* the issue was that if you are in the middle of editing something, and you randomly click somewhere else, you could be permitted to navigate without triggering the "are you sure" dialog, and loosing your edits. The other issue could probably be fixed by calling save on blur?