Remove pattern="" in the comment form (HTML5 mode) to avoid mistaken :invalid styles.

This was originally included for Opera 10, but is not needed as of Opera 11, and current is Opera 15.

props jorbin, markjaquith.
fixes #24475.



git-svn-id: http://core.svn.wordpress.org/trunk@24573 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revisions: CSS cleanup, see #24425.

git-svn-id: http://core.svn.wordpress.org/trunk@24574 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revisions improvements

Revert mouse dragging code which was accidentally removed in [24565].

see #24425.

git-svn-id: http://core.svn.wordpress.org/trunk@24575 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Gracefully slide down the "{Name} is editing" notice portion of the post row, so everything isn't shifting down in an instant and throwing off people's clicks.

fixes #24553. props kadamwhite, johnbillion.

git-svn-id: http://core.svn.wordpress.org/trunk@24576 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Heartbeat:
- Pass the actual error to the jQuery event 'heartbeat-connection-lost'.
- When in error state, keep trying to connect even when no response is expected until the error is cleared.
See #23216.

git-svn-id: http://core.svn.wordpress.org/trunk@24577 1a063a9b-81f0-0310-95a4-ce76da25c4cd