Fixed some broken links on admin user page.

app/views/admin/users/show.html.erb

@@ -38,7 +38,7 @@
     <p style="clear:both">
     <%= link_to 'Bearbeiten', edit_admin_user_path(@user) %>
     | <%= link_to 'Löschen', [:admin, @user], :confirm => "Willst du #{@user.first_name} wirklich rausschmeißen?", :method => :delete %>
-    | <%= link_to 'Nachricht senden', :controller => 'messages', :action => 'user', :id => @user %>
+    | <%= link_to "Nachricht senden", user_message_path(@user.id) %>
     </p>
   </div>
   <div class="box_title"><h2>Gruppenabos</h2></div>
@@ -48,6 +48,5 @@
       <%= link_to(membership.group.name, [:admin, membership.group]) %>
     </p>
     <% end -%>
-    <p><%= link_to 'Gruppenübersicht', :action => 'listGroups' %></p>
   </div>
-</div>
+</div>