Improved wiki layout for sidebar and version sections

* Added new helper function format_datetime_timespec

app/views/pages/show.html.haml

@@ -17,7 +17,12 @@
     #page-versions
       = link_to "Bearbeiten", edit_page_path(@page)
       = link_to_function "Versionen (#{@page.versions.count})", "Element.toggle('versions')"
-      #versions{:style => "display:none"}
+      - unless @page.children.empty?
+        = link_to_function "Unterseiten", "Element.toggle('subpages')"
+    #versions{:style => "display:none"}
+      .box_title
+        %h2 Versionen
+      .column_content
         %ul
           - for version in @page.versions.reverse
             %li
@@ -26,10 +31,12 @@
 
     - unless @page.children.empty?
       #subpages
-        %h2 Unterseiten
-        %ul
-          - for page in @page.children
-            %li= link_to_wikipage(page)
+        .box_title
+          %h2 Unterseiten
+        .column_content
+          %ul
+            - for page in @page.children
+              %li= link_to_wikipage(page)
 
   = render :partial => 'body'