Use collapsible box to configure visible roles

Use collapsible box to configure visible roles

Summary:
A modal dialog that opens another modal dialog is bad UX and should be
avoided whenever possible. These days we have `KCollapsibleGroupBox`
that can be used to show advanced settings without cluttering the
default layout.

This change removes the `AdditionalInfoDialog` and uses a collapsible
groupbox instead. The `Apply` buttons gets enabled whenever a role gets
checked or unchecked, consistently with the existing checkboxes.

Test Plan: Change visible roles in the view properties dialog.

Reviewers: #dolphin, #vdg

Reviewed By: #vdg

Subscribers: ngraham, kfm-devel

Tags: #dolphin

Differential Revision: https://phabricator.kde.org/D13569