Shirts: Resize lady shirt images

Make them smaller. Much smaller.
Fix /rsvp/submit rewrite rules

Now /rsvp/submit and /rsvp/submit/shirt work at the
same time in IIS.
Fix the second blues band name (Worth)

The band on Saturday evening is called Worth.
Admin: Shirts: Add ability to send emails out

List out folks who want a shirt, and send an email
to them when a button is pressed.
Shirts: Detect when a guest has already ordered

Find a guest's record when visiting the shirt order
form a second time.
Shirts: Add payment info on final page