--- Added URL Variable to multiple date events so when button is selected to SginIn All Participants, all of the checkboxes on the screen for the event will be selected.
--- Added URL Variable to multiple date events so when button is selected to SginIn All Participants, all of the checkboxes on the screen for the event will be selected.

gpearson/MuraEventRegistration,gpearson/MuraEventRegistration,gpearson/MuraEventRegistration,gpearson/MuraEventRegistration