Changed optional nominations_accepted field to have blank=True
Changed optional nominations_accepted field to have blank=True

mozilla/badges.mozilla.org,mozilla/badges.mozilla.org,mozilla/badges.mozilla.org,deepankverma/badges.mozilla.org,deepankverma/badges.mozilla.org,deepankverma/badges.mozilla.org,deepankverma/badges.mozilla.org,mozilla/badges.mozilla.org