thermostat: settings: update progs in memory, not only on disk

soft/thermostat/src/settings.cpp

@@ -138,6 +138,8 @@ void Settings::setRoomPrograms(int idx, QVector<struct Program> &progs)
 		return;
 	}
 
+	m_rooms[idx].progs = progs;
+
 	this->beginWriteArray("rooms", nbZones());
 
 	this->setArrayIndex(idx);