Update tree.html.erb

Author: lmrodriguezr

app/views/registers/tree.html.erb

@@ -7,6 +7,7 @@
 
 <% def render_tree_node(n, contents) %>
   <% if n.present? %>
+    <%= '[...] ' if n.incertae_sedis? %>
     <%= content_tag(@register.names.include?(n) ? :b : :span) do %>
       <%= display_link(n, :formal_html) %>
     <% end %>