app/views/chaltron/users/_user.html.erb
<tr>
<td class='username'>
<%= display_username(user) %>
</td>
<td class='fullname'><%= user.fullname %></td>
<td class='email'><%= user.email %></td>
<td class='roles'>
<%= safe_join(user.roles.map{|x| content_tag(:span, t("roles.#{x}"), class: 'badge badge-primary') }, ' ') %>
</td>
</tr>