[RBAC] Deny access to user with no permissions

[BulatKha]

Might be taken into work after the #753

Which version of the app are you running?

5900f8e

Is your proposal related to a problem?

User, that can pass the authentication, gets to the page with no clusters on it. Which is a bit strange.

Describe the solution you'd like

User with no permissions on any cluster, should be declined access instead.

Describe alternatives you've considered

Separate page with "No permissions provided for the user! Contact your administrator for support" message

Additional context