Merge branch 'security-update-2.0.3' into 'master'

Update to Django 2.0.3

See merge request !740

(cherry picked from commit 7f5a40eb)

f7d9f384 Update to Django 2.0.3

requirements.txt

-Django>=2.0.2,<2.1
+Django>=2.0.3,<2.1
 django-localflavor>=2.0,<2.1
 Pillow>=5.0,<5.1
 django-compressor>=2.1,<3