QT11 Fix
QT11 Fix

Include QButtonGroup to fix aec3cc6539e2a5abdeb8200a87287191bfdb24fa under QT11
docsteer/sacnview,docsteer/sacnview,docsteer/sacnview,docsteer/sacnview,docsteer/sacnview,docsteer/sacnview,docsteer/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview,marcusbirkin/sacnview