Twenty Twelve: fix double featured images in Front Page Template, closes #22943.

git-svn-id: http://core.svn.wordpress.org/trunk@23561 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Twelve: properly style visited links in entries, widgets, and comment text. Props DrewAPicture, fixes #23200.

git-svn-id: http://core.svn.wordpress.org/trunk@23562 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use wp_unslash() instead of stripslashes() and stripslashes_deep(). Use wp_slash() instead of add_magic_quotes().

see #21767


git-svn-id: http://core.svn.wordpress.org/trunk@23563 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use prepare instead of escape.

see #21767


git-svn-id: http://core.svn.wordpress.org/trunk@23564 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a filter for attributes on menu item links. props simonwheatley, DrewAPicture, SergeyBiryukov, nacin. fixes #16738.

git-svn-id: http://core.svn.wordpress.org/trunk@23565 1a063a9b-81f0-0310-95a4-ce76da25c4cd