I just updated the parts list with the new UV sensor and all the links have been verified to work. I also added a link to a Raspberry PI kit that is sold on amazon that is very nice. It comes with the SD card pre-loaded with NOOBS (the operating system for Raspberry PI) power supply, video cable, a nice little case, basically everything you need to get started in one place.
In addition to that parts list you'll need the general supplies like breadboard wires, breadboard and cable for your Arduino, monitor, keyboard and mouse for the raspberry pi.
By no means feel that you have to get that one, and you can get any raspberry pi board at it will work with our project.
Looking forward to seeing everyone at the class next month.