Opera 9.51 Release candidate 2

Opera released its Release candidate 2 of 9.51.

Changelog:

Security status should be now always correctly set when navigating from HTTP to HTTPS.
Fixed an issue related to OCSP and CRLs that would lower security level
Fixed an issue in the content blocker that might cause no page to be loaded anymore.
Fixed a crash on Yahoo! Mail.
Fixed a crash with userjs.
Fixed a crash related to Dragonfly.
Fixed a crash on Print Preview.
Fixed an issue that caused unwanted line breaks in rich text editors.
Fixed loading of stylesheets when navigating in history.