DFW: fix reference to off() when pressing Esc. Props kovshenin, see #24067.

git-svn-id: http://develop.svn.wordpress.org/trunk@26966 602fd350-edb4-49c9-b593-d223f7449a82
Switch Twitter oEmbed to SSL due to a Twitter API change. Ah, the open web.

props yurivictor, cojennin.
see #26844.


git-svn-id: http://develop.svn.wordpress.org/trunk@26967 602fd350-edb4-49c9-b593-d223f7449a82
Realign the oEmbed providers. see #26844.


git-svn-id: http://develop.svn.wordpress.org/trunk@26968 602fd350-edb4-49c9-b593-d223f7449a82
Add a contrasting border to admin feature pointers.

props iammattthomas.
see #26689.


git-svn-id: http://develop.svn.wordpress.org/trunk@26970 602fd350-edb4-49c9-b593-d223f7449a82
Unit tests for get_url_in_content(). Return false when no content is passed, to match the return value of no links being found.

props mdbitz.
#26171.


git-svn-id: http://develop.svn.wordpress.org/trunk@26972 602fd350-edb4-49c9-b593-d223f7449a82
Add dfn, mark, and samp to kses.

props kraftbj.
fixes #24950.


git-svn-id: http://develop.svn.wordpress.org/trunk@26973 602fd350-edb4-49c9-b593-d223f7449a82
make_clickable: When cleaning up accidental links within links, account for the tag being split by newlines.

props dd32.
fixes #19028.


git-svn-id: http://develop.svn.wordpress.org/trunk@26974 602fd350-edb4-49c9-b593-d223f7449a82
Use the_title_attribute() in feed_links_extra(), rather than get_the_title().

props c3mdigital.
fixes #15046.


git-svn-id: http://develop.svn.wordpress.org/trunk@26975 602fd350-edb4-49c9-b593-d223f7449a82