Part 2 of 3 for T7841: Revamp buttons on the bottom to solve various usability issues
Depends on D10283
BUG: 375965
FIXED-IN: 18.04
Nobody can ever find Spectacle's Configure window because the menu item to invoke is hidden in the Save menu, oddly enough. Once D10283: (1/3) Remove unnecessary Discard/Quit button lands, there'll be room for another button. So, we move the "Configure..." item out of the Save menu and into its own button.