beginning of modularization and additional tests

auth/tests.py

helios/crypto/electionalgs.py

helios/datatypes/__init__.py

helios/datatypes/legacy.py

helios/fixtures/election.json

helios/fixtures/voter-file.csv

helios/forms.py

helios/models.py

helios/templates/voters_list.html

helios/tests.py

helios/views.py