Typofix.
Update `set_as_primary` view.

Check the email is verified before setting it as primary.
Merge branch 'master' of https://github.com/scott2b/django-multimail
Another typofix.
Aaand another typo.
Merge pull request #6 from volrath/master

Check an email is verified before setting it as primary in the set_as_primary view.