Change role structure

Still needs to: change the views and create sub_roles in the dev.rake

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

@@ -0,0 +1,11 @@
+<div id="search">
+	<input id="user_search" name="user[username]" size="30" type="text" />
+</div>
+<div class="member_setup">
+<h1><%= t('admin.setup_member') %></h1>
+<ul class="list">
+	<li class="set_1"><%= link_to content_tag(:span, t('admin.list_users')), admin_users_path %></li>
+	<li class="set_2"><%= link_to content_tag(:span, t('admin.list_roles')), admin_roles_path %></li>
+	<li class="set_3"><%= link_to content_tag(:span, t('admin.list_infos')), admin_infos_path %></li>
+</ul>	
+</div>