Long press a group to view its properties window

**Is your feature request related to a problem? Please describe.**

Now we can click the current group in the breadcrumb navigation and see its properties window, but when we long press a group icon in the main interface of entries, we can just choose to go into the group or edit it.

I think it would be nice to see the properties without entering the specific group.

**Describe the solution you'd like**

Allow long press a group in the main interface to view its properties window.

Start with the main interface of entries, the long-press action for a group icon, and the existing breadcrumb action that opens the group properties window. Trace how the current choices to enter or edit a group are presented, then make the properties window available from the long-press menu without entering the group. Done means the group properties can be opened directly from the main interface.

Written by the indexing model from the issue text.