Implemented ability to make picks via form

It isn't pretty yet, but it WORKS! You can now make your picks via the
web submission system. There is server side validation of points, but
not server side validation of expired picks (only client side). Viewing
past weeks will show your correct and incorrect games. The picks system
allows a user to hold off on making any picks that they so desire, as
long as they leave the pick form in a legal state.