Remove old control/accordion section title gradients that were still appearing in the customizer and reinstate a divider between the customizer sidebar and the preview. props ryelle, helen. see #25858.

Built from https://develop.svn.wordpress.org/trunk@26165


git-svn-id: http://core.svn.wordpress.org/trunk@26076 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix JSHint errors in postbox.js.

props atimmer.
fixes #26006.

Built from https://develop.svn.wordpress.org/trunk@26167


git-svn-id: http://core.svn.wordpress.org/trunk@26077 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Heartbeat: clean up code style, better naming, better code structure. Props carldanley, props evansolomon.
Changes:
- Add connectNow() public method to trigger a connection immediately.
- Remove the "skipping" when no data to send.
- Change the default interval to 60 sec.
- Fix resetting the next connection time when changing the interval.
See #25073.
Built from https://develop.svn.wordpress.org/trunk@26169


git-svn-id: http://core.svn.wordpress.org/trunk@26078 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a :disabled style for radio inputs and checkboxes. Fixes #26004.


Built from https://develop.svn.wordpress.org/trunk@26170


git-svn-id: http://core.svn.wordpress.org/trunk@26079 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Replace icon-pointer-flag.png with the flag Dashicon. Fixes #25982.


Built from https://develop.svn.wordpress.org/trunk@26171


git-svn-id: http://core.svn.wordpress.org/trunk@26080 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In bulk editing mode, make all columns full-width and increase the font size when at responsive sizes. Fixes #25978, props johnbillion.


Built from https://develop.svn.wordpress.org/trunk@26172


git-svn-id: http://core.svn.wordpress.org/trunk@26081 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make the menu location screen full-width at responsive sizes. Fixes #25975, props johnbillion.


Built from https://develop.svn.wordpress.org/trunk@26173


git-svn-id: http://core.svn.wordpress.org/trunk@26082 1a063a9b-81f0-0310-95a4-ce76da25c4cd
JSHint and coding style fixes for xfn.js.

props dougwollison.
fixes #26030.

Built from https://develop.svn.wordpress.org/trunk@26174


git-svn-id: http://core.svn.wordpress.org/trunk@26083 1a063a9b-81f0-0310-95a4-ce76da25c4cd
More specific CSS for the dashboard activity widget.

props iammattthomas.
see #26028.

Built from https://develop.svn.wordpress.org/trunk@26175


git-svn-id: http://core.svn.wordpress.org/trunk@26084 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Move #wpadminbar responsive styles from wp-admin.css to admin-bar.css. Remove unneeded font overrides and !importants where possible. Make sure the site menu item uses the globe icon consistently instead of switching to the home icon <782px. Fixes #25971.


Built from https://develop.svn.wordpress.org/trunk@26176


git-svn-id: http://core.svn.wordpress.org/trunk@26085 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Move the responsive padding for html.wp-toolbar to wp-admin.css since it affects the page content, not the toolbar.
Built from https://develop.svn.wordpress.org/trunk@26177


git-svn-id: http://core.svn.wordpress.org/trunk@26086 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In multisite, set storage space labels to nowrap to prevent unnecessary line breaks. Fixes #25919, props SergeyBiryukov.
Built from https://develop.svn.wordpress.org/trunk@26178


git-svn-id: http://core.svn.wordpress.org/trunk@26087 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Reduce responsive menu transition animation from .2s to .05s to reduce lag. See #25969.
Built from https://develop.svn.wordpress.org/trunk@26179


git-svn-id: http://core.svn.wordpress.org/trunk@26088 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Move the color rule for adminbar icons to a less-specific selector so that color schemes correctly affect icon color in the toolbar.
Built from https://develop.svn.wordpress.org/trunk@26180


git-svn-id: http://core.svn.wordpress.org/trunk@26089 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Color schemes should use .ab-icon:before instead of .ab-item:before to target adminbar icons. See #25858.
Built from https://develop.svn.wordpress.org/trunk@26181


git-svn-id: http://core.svn.wordpress.org/trunk@26090 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove now-unused #adminmenushadow. see #25858.

Built from https://develop.svn.wordpress.org/trunk@26182


git-svn-id: http://core.svn.wordpress.org/trunk@26091 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Clean up wp-admin/index.php after dash merge. see #25824.

Built from https://develop.svn.wordpress.org/trunk@26183


git-svn-id: http://core.svn.wordpress.org/trunk@26092 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fixing some inconsistent behavior on toolbar icons:

- Use .ab-icon:before, .ab-item:before, and #adminbarsearch:before to select all toolbar icons.
- Rewrite the selector for toolbar icon hover styles so they're not overridden by default colors.
- Add #adminbarsearch:before to color schemes, so its icon color is changed with the others.
- Remove duplicate color rule on #adminbarsearch:before.

See #25858.


Built from https://develop.svn.wordpress.org/trunk@26184


git-svn-id: http://core.svn.wordpress.org/trunk@26093 1a063a9b-81f0-0310-95a4-ce76da25c4cd
We only need to declare Open Sans once in wp-admin.css. See #25858.

Built from https://develop.svn.wordpress.org/trunk@26185


git-svn-id: http://core.svn.wordpress.org/trunk@26094 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Updates: When a failed Background Update occurs, only show the failed update nag if the user hasn't yet updated if it was an early abort. Props SergeyBiryukov. Fixes #25887 for trunk

Built from https://develop.svn.wordpress.org/trunk@26186


git-svn-id: http://core.svn.wordpress.org/trunk@26095 1a063a9b-81f0-0310-95a4-ce76da25c4cd