Replaced IndexController by Home- and FoodcoopController. Some reorganizing in groups/memberships-logic (moved memberships out of admin-namespace).

app/views/shared/memberships/_non_members.rhtml

@@ -0,0 +1,11 @@
+<ul>
+ <% for user in @group.non_members %>
+  <li>
+    <b><%= user.nick %></b> (<%=h user.first_name + ' ' + user.last_name %>)
+    | <%= link_to_remote 'hinzufügen', 
+        :url => { :controller => '/memberships', :action => 'add_member', :group_id => @group, :user_id => user },
+        :before => "Element.show('loader')",
+        :success => "Element.hide('loader')" %>
+  </li>
+ <% end %>
+</ul>