Describe the bug

in the keyboard shortcuts, Ctrl+Q is said to quit Gaphor. However the key-binding doesn't work.

To Reproduce

Steps to reproduce the behavior:

1. Start Gaphor
2. Hit Ctrl+Q
3. Nothing happens

Expected behavior

App should quit.

OS

• Linux (Please put in notes the specific distro)
• macOS
• Windows

Version

Version of Gaphor:

Additional information

This works on macOS, because macOS has a hard-coded keybinding for app.quit.

Diagnosis

The Ctrl+q action is defined on the Application class. This class is not an entry point, so it will not pick up the shortcut in gaphor/ui/__init__.py.