;shake: webmanuals: move page toc below h1 again

To avoid extra toc items.
Also added a class permitting manual-specific styling.

Shake.hs

@@ -521,12 +521,13 @@ main = do
         liftIO $ writeFile out $ unlines [
            "<!-- " ++ "Generated by \"Shake webmanuals\" from " ++ unwords deps ++ " -->"
           ,"<div class=\"docversions\"></div>"
-          ,"<div class=\"pagetoc\">"
-          ,"<!-- toc -->"
-          ,"</div>"
           ,""
           ,"# " ++ heading
           ,""
+          ,"<div class=\"pagetoc manual\">"
+          ,"<!-- toc -->"
+          ,"</div>"
+          ,""
           ]
         cmd Shell
           m4 "-DWEBFORMAT -I" dir commonm4 commandsm4 packageversionm4 packagemandatem4 src "|"