message: Add vertical spacer
diff: </property>
  </widget>
  </item>
  + <item row="18" column="0">
  + <spacer name="verticalSpacer_3">
  + <property name="orientation">
  + <enum>Qt::Vertical</enum>
  + </property>
  + <property name="sizeHint" stdset="0">
  + <size>
  + <width>20</width>
  + <height>40</height>
  + </size>
  + </property>
  + </spacer>
  + </item>
  </layout>
  </widget>
  </widget>
  