Code input before consent form and readme for surveys
a demandé de fusionner 133-tests-standalone-process-code-id-informed-consent-groups-surveygroup vers dev
Closes #133 (closed)
For the readme I took the liberty of copying and pasting some explanations given by @bridubois in some issues, if that's ok.
I didn't change yet the survey csv as it already changes for issue #138 (closed) I thought it would be easier to change it when that one in closed.