shortcuts: fix Ctrl+N and add Ctrl+Q and Ctrl+W as quit actions

The Ctrl+N keyboard shortcut didn't work.

Support both Ctrl+Q and Ctrl+W to quit the app.
1 job for keyboard-shortcuts in 6 minutes and 2 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #221276
build-and-test

00:06:02