Stop execution / Interrupt overlap

[rebornix]

The Jupyter extension contributes a notebook controller with an interrupt handler, the Stop Execution will then call the interrupt handler directly, which does the same as the Interrupt command contributed by the extension. We may want to hide the Interrupt command.

It's arguable that if we want to change the title of Stop Execution to Interrupt when the controller contributes interrupt handler but it's also impl details which users might not care.

[IanMatthewHuff]

Agreed. Jupyter does call it interrupt, but my bet would be customers wouldn't be too confused by either name for the command.

[DonJayamanne]

Personally I don't think we even need a command (i.e. an icon on the toolbar).