title: Reset participation cookie
body: <p>In LimeSurvey you can choose to use cookies to forbid double participation. How can I reset the cookies on the survey side (i.e. tell it to use a different seed or whatever). Because I've launched a survey for a small number of people as a test drive, but now I want to launch it for real, and as I've made changes to it I want to allow people to participate.</p>