Switch to side-by-side view

--- a/src/qtgui/rclmain.ui
+++ b/src/qtgui/rclmain.ui
@@ -118,6 +118,7 @@
         <action name="fileToggleIndexingAction"/>
         <separator/>
         <action name="fileEraseDocHistoryAction"/>
+        <action name="showMissingHelpers_Action"/>
         <separator/>
         <action name="fileExitAction"/>
     </item>
@@ -137,6 +138,7 @@
     <separator/>
     <item text="&amp;Help" name="helpMenu">
         <action name="userManualAction"/>
+        <action name="showMissingHelpers_Action"/>
         <separator/>
         <action name="helpAbout_RecollAction"/>
     </item>
@@ -229,6 +231,14 @@
     </action>
     <action>
         <property name="name">
+            <cstring>showMissingHelpers_Action</cstring>
+        </property>
+        <property name="menuText">
+            <string>&amp;Show missing helpers</string>
+        </property>
+    </action>
+    <action>
+        <property name="name">
             <cstring>helpAbout_RecollAction</cstring>
         </property>
         <property name="menuText">