Removed newline in the begining of email template files info_body, result_body, and vote_body.
Language is changed inside function 'single_voter_email', because celery seems not to be aware of language set in the settings file.
Language is passed to 'single_voter_email' as a parameter. Function 'voters_email' also receive language as a parameter, and uses it
when calling 'single_voter_email'.