Don't display errors for XML-RPC requests, as they malform the response.

fixes #23811. props kovshenin, markoheijnen.

git-svn-id: http://core.svn.wordpress.org/trunk@24564 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revisions improvements

* Consolidated router code
* Corrected routing behavior
* Tooltip model
* Removed mouse dragging code

props adamsilverstein, ocean90. see #24425.

git-svn-id: http://core.svn.wordpress.org/trunk@24565 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Push menu settings checkboxes down to a new line to avoid weird overlaps in some languages.

props SergeyBiryukov. see #24546.

git-svn-id: http://core.svn.wordpress.org/trunk@24566 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Recombine a fragmented help paragraph so its integrity does not depend on translaters noticing a trailing space in the first sentence.

props xibe. fixes #24546.

git-svn-id: http://core.svn.wordpress.org/trunk@24567 1a063a9b-81f0-0310-95a4-ce76da25c4cd
@-silence an Imagick call that causes a warning in PHP 5.4.

props DH-Shredder. fixes #24539.

git-svn-id: http://core.svn.wordpress.org/trunk@24568 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove img_html_to_post_id(). It's unused since [24555]. fixes #24610.

git-svn-id: http://core.svn.wordpress.org/trunk@24569 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove the_post_format_gallery(). see #24452.

git-svn-id: http://core.svn.wordpress.org/trunk@24570 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Drop some wrapper functions

* `get_attached_audio()` (use `get_attached_media( 'audio' )`)
* `get_attached_images()` (use `get_attached_media( 'image' )`)
* `get_attached_videos()` (use `get_attached_media( 'video' )`)

props wonderboymusic. fixes #23843.

git-svn-id: http://core.svn.wordpress.org/trunk@24571 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make sure `get_post_gallery()` doesn't ever return an array when asked for a string.

props kovshenin, wonderboymusic, ocean90. fixes #24270.

git-svn-id: http://core.svn.wordpress.org/trunk@24572 1a063a9b-81f0-0310-95a4-ce76da25c4cd