R1:7e91f42b02b0

Issue commands to Nuance items, at least roughly

Summary:
Ref T12738. This makes clicking "Throw In Trash" technically do something, sort of.

In Nuance, the default mode of operation for actions is asynchronous -- so you don't have to wait for a response from Twitter or GitHub after you mash the "send default reply tweet" / "close this pull request with a nice response" button and can move directly to the next item instead.

In the future, some operations will attempt to apply synchronously (e.g., local…