lib/bh/views/bh/_dropdown.html.erb
<div class="<%= div[:class] %>">
<button class="dropdown-toggle <%= button[:class] %>" type="button" id="<%= button[:id] %>" data-toggle="dropdown">
<%= button[:caption] %>
<span class="caret"></span>
</button>
<ul class="<%= ul[:class] %>" role="menu" aria-labelledby="<%= button[:id] %>">
<%= content %>
</ul>
</div>