User manual: Tying up loose ends

As the heading above says.
1) Place user manual option in main menu at the bottom of the Help submenu.
   It is more easily seen in that position.
2) Replace two images. I forgot one of the images that had been changed to F20 format.
3) A few small changes, including in the systematic description of the main menu.

Signed-off-by: willem ferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

Documentation/user-manual.txt

@@ -63,7 +63,6 @@ Divers
 toc::[]
 
 [[S_UserSurvey]]
-
 Using this manual
 -----------------
 When opened from within _Subsurface_, this manual does not have external controls. However,
@@ -2344,7 +2343,7 @@ the Export dialog. This dialog always gives two options: save ALL dives, or save
 the dives selected in *Dive List* panel of _Subsurface_. Click the appropriate
 radio button (see images below).
 
-image::images/Export.jpg["Figure: Export dialog",align="center"]
+image::images/Export_f20.jpg["Figure: Export dialog",align="center"]
 
 A dive log or part of it can be saved in three formats:
 
@@ -3002,7 +3001,8 @@ dealing with the appropriate operations.
   well as licensing information.
 - _Check for updates_ - Find out whether a newer version of Subsurface is available
   on the http://subsurface-divelog.org/[_Subsurface_ web site].
-- _User Manual_ - Open a window showing this user manual.
+- <<S_UserSurvey,_User survey_>>  - Help to make _Subsurface_ even better by taking part in our user survey.
+- _User manual_ - Open a window showing this user manual.
 
 
 

qt-ui/mainwindow.ui

@@ -259,8 +259,8 @@ p, li { white-space: pre-wrap; }
     </property>
     <addaction name="actionAboutSubsurface"/>
     <addaction name="action_Check_for_Updates"/>
-    <addaction name="actionUserManual"/>
     <addaction name="actionUserSurvey"/>
+    <addaction name="actionUserManual"/>
    </widget>
    <widget class="QMenu" name="menuImport">
     <property name="title">