Use _html suffix to avoid using raw when displaying translated strings

This is safer than raw, since any user input is still escaped.

app/views/browse/history.html.erb

@@ -2,7 +2,7 @@
 
 <h2>
   <a class="geolink" href="<%= root_path %>"><span class="icon close"></span></a>
-  <%= raw t("browse.#{@type}.history_title", :name => printable_name(@feature)) %>
+  <%= t("browse.#{@type}.history_title_html", :name => printable_name(@feature)) %>
 </h2>
 
 <%= render :partial => @type, :collection => @feature.send("old_#{@type}s").reverse %>