R1:a7b472284be6

Mobile: show Homepage contents and avoid duplicate menus

Summary:
After this change, the Homepage finally shows contents on Mobile,
instead of just showing the sidebar menu twice.

Closes T15216

Test Plan:
To test this change in general:

- resize the window horizontally and enjoy

I tested it in:

- tested homepage of Phorge
- Audit
- tested homepage of Audit
- Auth
- tested Auth homepage
- tested Login page
- tested Forgot your password page
- Config
- tested Config homepage
- tested page…