no vertical space left in protein view

src/gui/protein_view/protein_detail_view.ui

@@ -92,6 +92,9 @@
         </item>
         <item>
          <layout class="QVBoxLayout" name="verticalLayout_3">
+          <property name="spacing">
+           <number>0</number>
+          </property>
           <item>
            <widget class="QCheckBox" name="valid_checkbox">
             <property name="enabled">