Allow limit block visibility by role

Here a first approach

Fixed a little error on logic.

Hey @MaxMendez is this patch part of the issue fork? Can it be reviewed or is it still a work in progress?

Hi @admirlju, i've been testing it and seems to be complete and working properly.

It can be review.

I see you were working on the wrong branch in the issue fork. I applied your patch #3 to the branch 3383224-allow-limit-block and opened a merge request for it. Also tested the change, and from what I see it works fine so I'll set the status to RTBC.