Allow host connected banner/balloons notifications settings per role

Currently, the host connected banner/balloons notifications settings are only available globally under admin configurations. 

These settings are meant to decide whether users should be notified when they're being remotely controlled, which is important for certain industries; or access should be silent with less screen clutter for admin's convenience or monitoring purposes.

Oftentimes, we'd want this behavior to be different under different circumstances and different hosts. For example, we'd want one user role to always trigger the banner (for MSP techs etc), while another role is allowed to go in silently (for client's own access, or a monitoring manager, or a trusted senior admin etc).

It would be nice to provide some checkboxes under Role permissions to allow role-based balloon/notification settings to override the global settings.