The activity data export process has been around since the start of ChallengeRunner. Viewing all participant data allows the admin to validate the leaderboards
or even create additional leaderboards using the "raw" user data. Essentially, all participant input data (name, date, value) could be viewed online or downloaded
to a spreadsheet csv file.
Later, we included the ability to import data into a ChallengeRunner activity to facilitate bulk uploading of participant challenge data
by the challenge administrator.
Using the download and upload process in tandem will allow the admin to create an archive that can be used to preserve challenge
data and restore it should the need arise.