* Add setting to hide menu bar
Add a setting in the themes section to hide the menu bar.
The menu bar is not needed in everyday use and might not fit in with
signals dark theme. The hidden menu bar can still be shown by pressing
alt.
autoHideMenuBar is added to windowConfig and saved and restored on
startup to prevent flickering.
* Trigger events only when related setting changes
Set the event to trigger on instanciation of the view.
Notification settings no longer reapply the theme or menu bar settings.
* Save window state when closing the window
When not moving or resizing the window, no BrowserWindow config would be
created and saved.
Add a section under settings for performing a contact sync from your
mobile device. This just re-runs the same import operation that occurs
at install/link time.
// FREEBIE
