Add missing import in soc/views/site/sponsor/list.py which caused exception when app was deployed and first site you visited was "List Site Sponsors". Update files according to recent django update and django backwards incompatibility (for example newforms is changed to forms).
Patch by: Pawel Solyga
Review by: to-be-reviewed
# Please sort this file in alphabetical order by last (given) name.
# Please only include one name per line. If an (optional) email address is
# included, it must be RFC 2821 compliant (properly quoted, escaped, etc.).
# Lines beginning with # can be stripped from the file, as can blank lines.
"Todd Larsen" <tlarsen@google.com>
"Chen Lunpeng" <forever.clp@gmail.com>
"Sverre Rabbelier" <sverre@rabbelier.nl>
"Pawel Solyga" <pawel.solyga@gmail.com>