Ref T10054. This does a big chunk of the legwork to let users reconfigure profile menus (currently, just project menus).
This includes:
- Editing builtin items (e.g., you can rename the default items).
- Creating new items (for now, only links are available).
This does not yet include:
- Hiding items.
- Reordering items.
- Lots of fancy types of items (dashboards, etc).
- Any UI changes.
- Documentation (does feature: TODO link for documentation).
