Added HTML code Head
Update price logic

Will now properly discount 2 adults and up to 4 juniors at the discount
price.
Added Referral Report
Added fields for Price

TODO: Add price fields into detail view of Learn to Curl.
Datetime picker and price from db table
Added Auth to Admin pages

Added "free" option for manually entered registrations.
Various other enhancements.
Added admin features, email variables, etc.

Added two variables for setting email addresses to send from,
Fixed search page (redirection),
Modified login process,
Added PayPal timestamp of payment,
IPN email address works again
Added CSV download capacity
Used CSS instead
Added author tags
Using jQuery exclusively

On second page, moved "space remaining" lower, replaced with "event
name".
Fixed email export
Added cookie sets for referral
Minor updates.

TODO: Split payment across all registrations and link paypal transaction
in database. (remove $1 handling charge?)