A few improvements to the admin menu

Hello 👋🏼

The possibility to pin the most used elements in the admin menu to the top of the column is amazing, but there are a few things that could be improved IMO.

1. The stars:

Right now an elements that is not pinned has a solid star, and an element that is pinned has no star. This is confusing. The menu elements that are not pinned should have an outlined star, and those one pinned a solid star.

No pinned element (solid star)

Pinned element (no star)

2. Icons for pinned elements

The possibility to change the icon for those pinned elements is amazing, but we would need more options for the icon, now it is too limited:

3. In earlier versions, we had the possibility to hide the icons in the menu, I would LOVE to have that option back

Love!