Roles menu should stay visible when changing value of a role

[LiWeiYeh]

Is your feature request related to a problem? Please describe.
Relates to #147. The roles menu in the navbar should not close when you change the value of a role.

Describe the solution you'd like
When clicking on the roles icon in the navbar, it shows the roles and the values (true/false) relating to that role. When changing the role, the menu instantly closes. However, the desired implementation should keep the roles menu open.

Describe alternatives you've considered
Doing this was hard, because we're using primeng as a library, in this case specifically the menu. The primeng menu does not have a method to keep it visible. (Although, there is a visible field of the menu, we cannot directly call it).

Additional context

[Michiel-s]

As discussed last Friday during sprint review, this issue/feature is not needed anymore. It's fine to close the menu when a role is (de)activated