Don't show "Alternatives" menu by default
Review Request #129263 - Created Oct. 26, 2016 and submitted
And only enable it in the contextMenuAboutToShow connection.
We currently enable/disable the menu in this slot, but we default to it on. This meant other users of actions() that can't correctly emit contextMenuAboutToShow gain an extra entry which might not be relevant.
Appears on kickoff
Doesn't appear on the system tray
No longer appears in the toolbox (new fix)