Merge branch '176-pin-the-version-for-django-rest-framework' into 'master'

Fixing the version number for Django rest Framework

Closes #176

See merge request !180

setup.py

@@ -17,12 +17,12 @@ setup(name='political-memory',
         'django-coffeescript>=0.7,<0.8',
         'django-compressor>=1,<2',
         'django-datetime-widget>=0.9,<1.0',
-        'django-filter>=0.13,<0.14',
+        'django-filter>=0.15,<0.16',
         'django-fontawesome>=0.2,<0.3',
         'django-rql-filter>=0.1.3,<0.2',
         'django-taggit>=0.17,<0.18',
         'django>=1.8,<1.9',
-        'djangorestframework>=3,<4',
+        'djangorestframework>=3,<3.5.1',
         'hamlpy>=0.82,<0.83',
         'ijson>=2.2,<2.3',
         'python-dateutil>=2.4,<2.5',