Updating Python requirements

requirements.txt

@@ -1,16 +1,33 @@
-Django==1.11.1
-argparse==1.2.1
+appdirs==1.4.3
 arrow==0.10.0
+astroid==1.5.2
+backports.functools-lru-cache==1.3
+bandit==1.4.0
+configparser==3.5.0
 dj-database-url==0.4.2
+Django==1.11.1
+django-mathfilters==0.4.0
+enum34==1.1.6
+gitdb2==2.0.0
+GitPython==2.1.3
 gunicorn==19.7.1
+isort==4.2.5
+lazy-object-proxy==1.2.2
 lockfile==0.12.2
+mccabe==0.6.1
+oauthlib==2.0.2
+packaging==16.8
+pbr==3.0.0
 psycopg2==2.7.1
+pylint==1.7.1
+pyparsing==2.2.0
 python-dateutil==2.6.0
 pytz==2017.2
-six==1.10.0
-whitenoise==3.3.0
-wsgiref==0.1.2
-pylint==1.7.1
-bandit==1.4.0
+PyYAML==3.12
 requests==2.14.2
 requests-oauthlib==0.8.0
+singledispatch==3.4.0.3
+six==1.10.0
+smmap2==2.0.1
+stevedore==1.21.0
+whitenoise==3.3.0