Add new price notices
Add new price notices

Adds the new "price will update blah blah blah" notices for supporter and season supporter badges. Changes the Notice class so it'll take and use an amount_extra argument to pass kick-in levels.
magfest/ubersystem,md1024/rams,magfest/ubersystem,md1024/rams,RAMSProject/rams,migetman9/ubersystem,migetman9/ubersystem,RAMSProject/rams,magfest/ubersystem,md1024/rams,magfest/ubersystem,migetman9/ubersystem,RAMSProject/rams