Make `/settings/monitors` point to the monitor settings and improve the page styling and responsiveness.

![Image](https://github.com/user-attachments/assets/9e522712-2165-4084-a7a1-c0a6df41b65d)
![Image](https://github.com/user-attachments/assets/48c57e67-efc0-4606-8ab2-4e229296bca7)
![Image](https://github.com/user-attachments/assets/bd295ccf-7f81-43d0-80e0-7bbb3ea5c758)

- [ ] add missing footer