Suggested fix committed to branch "ticket-5ff2043c96".

I put many pages, such as "timeline" to the and
it reduced dramatically the number of errors. The current "timeline"
page dropped from 85 to only 4 errors. That's better than
changing many &amp;'s to &amp;amp;'s in the source code, as this
patch does. Changing only the href() and style_submenu_element()
functions has much more effect.