Adds breadcrumb on all wiki page views.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@6182 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/wiki/diff.rhtml

@@ -2,7 +2,9 @@
 <%= link_to(l(:label_history), {:action => 'history', :id => @page.title}, :class => 'icon icon-history') %>
 </div>
 
-<h2><%= @page.pretty_title %></h2>
+<%= wiki_page_breadcrumb(@page) %>
+
+<h2><%=h @page.pretty_title %></h2>
 
 <p>
 <%= l(:label_version) %> <%= link_to @diff.content_from.version, :action => 'show', :id => @page.title, :project_id => @page.project, :version => @diff.content_from.version %>