Release 2.2

[dzenbot]

Native ZippyQ:

• Implement new API endpoints for ZippyQ

Race Limit Support:

• Display race limit in the race detail view.
• Allow changing the race limit when editing a race (organizer only).
• Test different use cases and errors thrown by the server.

Dark Mode Support:

• Adapt all UI views to the new dark style.
• Add infrastructure to persist the user's pref, while still listening to the system mode. User pref overrides system's.
• Put feature behind feature flag

General:

• Memory and threading optimizations with the help of CodeX