add raven to requirements/prod.txt. add raven as a logging handler
Merge pull request #31 from jasonthomas/sentry

add raven to requirements/prod.txt. add raven as a logging handler.
Update locale/es/LC_MESSAGES/messages.po
Merge pull request #32 from inma610/master

[es] webpay l10n
Update to the new native-persona.org server
proper lockout error handling (bug 797930)
Added correct log handlers (bug 807131)
Stop clobbering the default syslog
Put webpay log back to debug