Admin: Disable all access
RSVP: Add payment info for cash and check
RSVP: Add Paypal payment flow

Add a Paypal button, and integrate
payment into the flow.
RSVP: Use min-height for main panel

Using 'height' is too restrictive, as
sometimes want the panel to grow in size.
RSVP: Add links to home at end of flow
RSVP: Add payment messages to confirmation email
RSVP: Show frowns if no payment selected
RSVP: Go to Paypal when R.S.V.P. is pressed
RSVP: Be able to start over
Fix: RSVP: Hide payment info when nothing selected