message: Fixing ctrl-q bug on Linux.
  Original commit:
diff: @@ -526,6 +526,7 @@ Electron.app.on('web-contents-created', (webContentsCreatedEvent, webContents) =
  }
  let cmd_q = meta && !ctrl && !alt && !shift && code === 'KeyQ'
  + let ctrl_q = !meta && ctrl && !alt && !shift && code === 'KeyQ'
  let alt_f4 = !meta && !ctrl && alt && !shift && code === 'F4'
  let ctrl_w = !meta && ctrl && !alt && !shift && code === 'KeyW'
  let quit_on_mac = process.platform == 'darwin' && (cmd_q || alt_f4)
  