Retire app menu
Application menus have been a source of usability issues since they were introduced, despite attempts to improve them. We are therefore aiming to end their use by 3.32.0. Steps:
- The app menu should be replaced and a primary menu added in its place. This can contain all the existing app menu items.
- Rename the about item to "About Weather"
- Remove the Quit menu item
See the wiki page for design guidelines.