put site and source codes in survey url and not as query params
don't store usercode in survey completed cookie

no need to store it as a simple setting of a cookie will do
and we use the URLs sent in email to do any linking to the diary process
later on
move css to file and include using static tag
add foundation and apply basic style cobbled from sayit
implement question exclusion logic in javascript
tidy up survey html

remove some left over instruction html
add in some missing divs
add in question 14.2 textarea