Add missing class to button settings (#93)
Add missing class to button settings (#93)

Signed-off-by: Yannick Schaus <face5a63a8428ad87d6296bffc09b2e4f855592a@schaus.net>
openhab/org.openhab.ui.habpanel,ghys/habpanel,ghys/habpanel,Murpher/org.openhab.ui.habpanel,Murpher/org.openhab.ui.habpanel,openhab/org.openhab.ui.habpanel,ghys/habpanel,openhab/org.openhab.ui.habpanel,Murpher/org.openhab.ui.habpanel,openhab/org.openhab.ui.habpanel,ghys/habpanel