Option to deny app context for normal users

[tdipisa]

Description

Prevent normal user to see context in new Home Page. It would be good to design a new configuration property for disabling them at all from home page:

• Edit a context
• Filter by context
• Create a context
• Browse contexts

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Other useful information

Contexts are not strictly reserved to users with admin role but to all users who created them or according to the resource permissions. The only difference with the previous MS version is entirely on the front end side where by default there was a dedicated admin section for browsing contexts. Now, as we agreed during the design phase, there is only one place to browse all MS resources together which is the home page. We have proposed this initially because more in line with the MS model behind.
Via configuration it is possible to prevent normal users from creating and managing contexts (such us filtering and editing them) in the home page but, according to the MS model and permissions, all users are anyway able to see them in the home page catalog with the new fronted.
If you strictly want to have contexts not available for normal users (only for the admin ones) in the MS home page catalog, further development is necessary.