Minor fix.
Merge branch 'master' of github.com:CIRB/django-fixmystreet

# By afuca (4) and CIRB Jenkins (2)
# Via afuca
* 'master' of github.com:CIRB/django-fixmystreet:
  Remove unused code
  Back to development: 3.0.17
  Preparing release 3.0.16
  Use logs instead of print
  Fix notifications of subscribers when switching privacy of report: it's in real time
  Digest command: allow a date arg to specify a date to generate the digest