INFRA-184 Upgrade Joomla demo site to 3.5.1
Per this comment from [~mark.intcom] on CRM-18592: I think the reason why you can't replicate this on the demo site is because it is an outdated Joomla version: in the backend i see Joomla! 3.4.1, and we are currently at 3.5.1
We solved critical security issues in meantime with Joomla, so it would be good if the demo website was up to date.
I am a member of the JSST (Joomla Security Team).
Regards Mark
Original author: palantejon