LPS-51632 hide navigation when single article
LPS-51632 create display context and move code into it

Get rootResourcePrimKey from display context.
LPS-51632 get ancestor keys from display context
LPS-51632 check if navigation is shown in context
LPS-51632 split conditional
LPS-51632 move kbFolder urlTitle code into context
LPS-51632 don't include JSP at all if not needed
LPS-51632 avoid recomputing values
LPS-51632 Obtain HttpServletRequest from PortletRequest
LPS-51632 SF
LPS-51632 SF
LPS-51632 Rename