First commit! Changed just some helios configuration info.
Model VoterGroup added. Each VoterGroup is associated with an Election, while each Voter is associated with a VoterGroup.
Create election functionality allows the creation of up to 4 different voter groups attached to the election.
A VoterGroup form was added. The view election_new was modified to show a formset of VoterGroup and to save the groups.
The template was edited accordinly to show the new formset.
List of voter groups is shown in the election view, in 'voters and ballots' section.
Voter groups are recognized as the last field of CSV file in the upload of lists of voters.
Show voter groups in questions interface.
Allow to specify a different voting rule (min and max # of answers) for each group per question.
Fixed bug in the interface that added 5 answer fields each time user tried to edit a question.