Port the Group dialog widget. Was missed from the Qt5 porting.

Authored by piggz on May 23 2017, 9:53 PM.

Description

Port the Group dialog widget. Was missed from the Qt5 porting.

Summary: Make the group dialog work in Qt5

Test Plan: Build, open kreportexample and add/edit/remove group sections

Reviewers: staniek

Tags: KReport

Maniphest Tasks: T6182

Differential Revision: https://phabricator.kde.org/D5948