Theme help text updates. Consistently use Live Preview. Props SergeyBiryukov. fixes #20795

git-svn-id: http://core.svn.wordpress.org/trunk@20967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix collapse button and return link markup for theme install preview. Props koopersmith. fixes #20800


git-svn-id: http://core.svn.wordpress.org/trunk@20968 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Theme Customizer: Reduce reliance on fixed positioning and make sidebar UI flexible. Props koopersmith, ocean90, helenyhou. fixes #20799

git-svn-id: http://core.svn.wordpress.org/trunk@20969 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.4-RC1-20970.

git-svn-id: http://core.svn.wordpress.org/trunk@20970 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Refresh whimsy. fixes #20794

git-svn-id: http://core.svn.wordpress.org/trunk@20971 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Consolodate some strings. Props pavelevap. fixes #20809

git-svn-id: http://core.svn.wordpress.org/trunk@20972 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Custom background fixes:

* Specify default background colors for the bundled themes.
* Change the default custom background callback to only operate on saved values, rather than default values.
* Prevent an unsaved default value from overriding a manually modified style.css file.

Props nacin, kobenland
fixes #20448


git-svn-id: http://core.svn.wordpress.org/trunk@20973 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Don't allow unfiltered HTML comments from a frame. Props nacin. fixes #20812

git-svn-id: http://core.svn.wordpress.org/trunk@20974 1a063a9b-81f0-0310-95a4-ce76da25c4cd
POT, generated from r20974

git-svn-id: http://core.svn.wordpress.org/trunk@20975 1a063a9b-81f0-0310-95a4-ce76da25c4cd
POT, generated from r20974

git-svn-id: http://core.svn.wordpress.org/trunk@20976 1a063a9b-81f0-0310-95a4-ce76da25c4cd
New section on Twitter Embeds on the about page. props georgestephanis, chexee, azaozz, SergeyBiryukov, jane. fixes #20796.



git-svn-id: http://core.svn.wordpress.org/trunk@20977 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix notice in wp_read_image_metadata() when EXIF ISOSpeedRatings is array, props nacin, fixes #20807

git-svn-id: http://core.svn.wordpress.org/trunk@20978 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.4-RC1-20979.

git-svn-id: http://core.svn.wordpress.org/trunk@20979 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make the Skip Cropping button secondary. Props SergeyBiryukov, nacin. fixes #20815

git-svn-id: http://core.svn.wordpress.org/trunk@20980 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update custom header help text to reflect recent UI changes. Props SergeyBiryukov, rasheed. fixes #20827

git-svn-id: http://core.svn.wordpress.org/trunk@20981 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Don't show mime type filter links when choosing an image header from the media library. Props SergeyBiryukov, georgestephanis. fixes #20819

git-svn-id: http://core.svn.wordpress.org/trunk@20982 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Back compat for bundled themes. Props nacin, SergeyBiryukov, kobenland. fixes #20768

git-svn-id: http://core.svn.wordpress.org/trunk@20983 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Site/user autocomplete fixes.

* Lengthen the inputs in the Right Now network dashboard widget
* Border around the whole autocomplete widget/list
* Handle long strings
* Remove some CSS color cruft from the main stylesheet and de-dupe the JS closures for open/close callbacks.

Props helenyhou
fixes #20584


git-svn-id: http://core.svn.wordpress.org/trunk@20984 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.4-RC1-20985.

git-svn-id: http://core.svn.wordpress.org/trunk@20985 1a063a9b-81f0-0310-95a4-ce76da25c4cd
POT, generated from r20985

git-svn-id: http://core.svn.wordpress.org/trunk@20986 1a063a9b-81f0-0310-95a4-ce76da25c4cd