Update copyright year in site footer.
* Update survey to latest version
* Add nationality to survey
switch doctype to html5
fix meta viewport, use comma instead of semicolon
* Update copyright year in footer
Merge pull request #1 from neverendingo/fix-meta

Fix meta
* Finalise survey
* Fix some PHP errors found in Apache access logs
* Final updates to survey
* Reorder survey questions
* Yet more survey updates