Ensure all classes, methods, and significant sets of instructions are documented / commented

[mikemolenda]

• [x] Attendance
• [x] AttendanceDataAccess
• [x] Event
• [x] EventDataAccess
• [x] Survey
• [x] SurveyDataAccess
• [x] User
• [x] UserDataAccess
• [x] DbConn
• [x] AttendanceHelpers
• [x] EventHelpers
• [x] KioskHelpers
• [x] SessionHelpers
• [x] SurveyHelpers
• [x] UserHelpers
• [x] AddEvent
• [x] AddNewUserAccount
• [x] AddNewUserAccountKiosk
• [x] AddRegistration
• [x] AddRegistrationCSV
• [x] AddRegistrationGuest
• [x] AddUser
• [x] ListEvents
• [x] ListEventsGuest
• [x] ListEventRegistrations
• [x] ListPendingSurveysGuest
• [x] ListRegistrationsGuest
• [x] ListSurveys
• [x] ListUsers
• [x] ListUserRegsForEvent
• [x] ManagerHome
• [x] ManagerLogin
• [x] ManagerLogout
• [x] RemoveEvent
• [x] RemoveRegistration
• [x] RemoveRegistrationGuest
• [x] RemoveUser
• [x] ShowEventInfo
• [x] ShowEventInfoGuest
• [x] ShowKiosk
• [x] ShowKioskSelection
• [x] ShowSurveyForm
• [x] ShowSurveyInfo
• [x] ShowUserInfo
• [x] ShowUserInfoGuest
• [x] UpdateEvent
• [x] UpdatePassword
• [x] UpdatePasswordGuest
• [x] UpdateUser

[mikemolenda]

Only comment JSPs if they contain logic:

• [x] add-event.jsp
• [x] add-new-user-account.jsp
• [x] add-registration-csv.jsp
• [x] add-user.jsp
• [x] header.jsp
• [x] kiosk-message.jsp
• [x] list-event-registrations.jsp
• [x] list-events.jsp
• [x] list-events-guest.jsp
• [x] list-registrations-guest.jsp
• [x] list-surveys.jsp
• [x] list-surveys-guest.jsp
• [x] list-user-regs-for-event.jsp
• [x] list-users.jsp
• [x] manager-home.jsp
• [x] manager-login.jsp
• [x] nav.jsp
• [x] remove-registration.jsp
• [x] show-event-guest.jsp
• [x] start-kiosk.jsp
• [x] survey.jsp
• [x] update-event.jsp
• [x] update-password.jsp
• [x] update-password-guest.jsp
• [x] footer.jsp
• [x] footer-kiosk.jsp
• [x] add-registration.jsp
• [x] error-generic.jsp
• [x] kiosk-lock.jsp
• [x] kiosk-signin.jsp
• [x] remove-event.jsp
• [x] remove-registration-guest.jsp
• [x] remove-user.jsp
• [x] show-event-info.jsp
• [x] show-survey-info.jsp
• [x] show-user-info.jsp
• [x] show-user-info-guest.jsp
• [x] update-user.jsp
• [x] index.jsp