[fix bug 1007077] Implement email backend for remo dev/stage.

* Use DatabaseEmailBackend to store emails in the database.
* Override this functionality for emails originating from SERVER_EMAIL
  and send them through SMTP to notify ADMINS.
[fix bug 1034569] Add a check mark to the current polls that a user has voted.
Merge pull request #776 from johngian/1007077-fix-admin-emails

[fix bug 1007077] Implement email backend for remo dev/stage.
Merge pull request #778 from akatsoulas/1034569

[fix bug 1034569] Add a check mark to the current polls that a user has voted.
[fix bug 1039218] Remove spaces for IDs in edit profile page.
Merge pull request #781 from akatsoulas/1039218

[fix bug 1039218] Remove spaces for IDs in edit profile page.