Add basic Sponsors List, Create New Sponsor, Sponsor Public Profile views. Change all properties in Group model as required for now. Remaining TODO: write validation functions for Sponsor edit and create form fields that need additional validation (like address, phone number format).
Patch by: Pawel Solyga
Review by: to-be-reviewed
release: "1.1.4"
timestamp: 1222457616
api_versions: ['1']