Consolidate `URL Config`, `Branding`, `Server Version` and `Metrics` into a single tabbed page for `Server`

This is too much duplication when screen estate is already lacking:

<img width="691" height="96" alt="Image" src="https://github.com/user-attachments/assets/67a41b06-86c7-4240-a591-b1d1f47a490a" />

<img width="384" height="302" alt="Image" src="https://github.com/user-attachments/assets/87f5e758-d557-4e5d-a5b1-30554205e58f" />