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

This is an optional add-on app, flatpages.

For full documentation, see either of these:

    * The file docs/flatpages.txt in the Django distribution
    * http://www.djangoproject.com/documentation/flatpages/ on the Web

Both have identical content.