Merge branch 'master' into election-view-detail

.gitignore

.travis.yml

CONTRIBUTORS.txt

INSTALL.md

Procfile

README.md

extract-passwords-for-email.py

helios/__init__.py

helios/apps.py

helios/celery_app.py

helios/crypto/algs.py

helios/crypto/electionalgs.py

helios/crypto/elgamal.py

helios/crypto/number.py

helios/crypto/numtheory.py

helios/crypto/randpool.py

helios/crypto/utils.py

helios/datatypes/__init__.py

helios/datatypes/djangofield.py

helios/datatypes/legacy.py