Sidemenu: Hide side menu and .collapse-button when there is no menu-item (depending on permissions)

[SebConejo]

Here is a mockup of the expected result.

-- The elemets to hide are those ones:

• Tag "collapse-button"
• div

[github-actions[bot]]

This issue is stale because it has been open for 100 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 30 days since being marked as stale.