fixed emailing to be consistent, with templates

auth/templates/login_box.html

auth/templates/perms_why.html

auth/views.py

helios/forms.py

helios/templates/combine_decryptions.html

helios/templates/email/info_body.txt

helios/templates/email/info_subject.txt

helios/templates/email/result_subject.txt

helios/templates/email/vote_body.txt

helios/templates/email/vote_subject.txt

helios/templates/voters_email.html

helios/tests.py

helios/views.py