Twenty Thirteen: remove Author Bio from post formats that are essentially quotes from other people, like Quote and Chat. Props obenland and markjaquith -- see #24176.

git-svn-id: http://core.svn.wordpress.org/trunk@24167 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Escape periods in oEmbed regex. props rovo89. fixes #24242.



git-svn-id: http://core.svn.wordpress.org/trunk@24168 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Thirteen: remove fixed navbar. Closes #24184.

git-svn-id: http://core.svn.wordpress.org/trunk@24169 1a063a9b-81f0-0310-95a4-ce76da25c4cd