Changes/fixes:
- Fixed an additional issue found that could cause menu text on Windows 10 to be white-on-white (and therefore unreadable).
- Fixed an issue with news feeds not showing up when embedded in web pages.
- Removed recently-added parsing of the child-src content security policy directive, after some web compatibility issues with it came to light, as well as it becoming clear that the CSP spec will see it removed in favor of the previous directive for embedded content. This should fix some intermittent issues people have reported on e.g. the main google.com page and phpMyAdmin installations.
Webmasters please note: If you wish to use CSP to control embedded content, please use frame-src.