merged a sponsors refactor and some other #djangocon changes

added new feature on #sponsorgap Sponsorgap: On the brand profile, you can now see open sponsorships of brands looking to sponsor newsletters or websites

added event sponsor as category to #sponsorgap database

added new brands to the #sponsorgap database

added three new datasets to find sponsors in Design, Finance and Food&Cooking industry #sponsorgap sponsorgap.com/find-sponsors

add sponsor section #prototypr

tweet new #nomads sponsor

added new brands to #sponsorgap database