Recommended update for opera
This update contains Opera 40.0.2308.81, including the following upstream changes:
* Whitelist some AV software certificates
* Backspace in URL field navigates back in history
* Fix importing of Firefox bookmarks.
* Fix broken tab bar and crash on dragging a tab while it loads
The bundled version of Chromium was updated to 53.0.2785.116.
- Submitted by Alexei Sorokin (XRevan86)