Use the newest connect-fonts-opensans which correctly uses the PostScript name of every font.

In OSX, local fonts are searched for by their Postscript names instead of their True Type Font names.
Fix the escaped HTML in the cookies_disabled screen.

fixes #2979
Merge pull request #3115 from shane-tomlinson/issue_2979_escaped_cookies_disabled

Fix the escaped HTML in the cookies_disabled screen.
Merge pull request #3113 from shane-tomlinson/newest_connect_fonts_opensans

Use the newest connect-fonts-opensans which correctly uses the PostScript name of every font.
Correct README. Fixes #3117