Unify the style of button-small everywhere we use it, and make sure the edit slug input lines up with its button and label. Fixes #26261, props mattheu.
Built from https://develop.svn.wordpress.org/trunk@26420


git-svn-id: http://core.svn.wordpress.org/trunk@26320 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove cloning of the search box with JS and move it to the bottom of the screen with CSS instead, see #26086
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git-svn-id: http://core.svn.wordpress.org/trunk@26321 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Match current theme background and add theme hover state color to the highlight color in color schemes. Fixes #25967, props ryelle.
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git-svn-id: http://core.svn.wordpress.org/trunk@26322 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Prevent horizontal scrolling when the responsive sidebar is open, pushing the main column off to the right. See #25858.
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git-svn-id: http://core.svn.wordpress.org/trunk@26323 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Correct the alignment of sortable list table headers. Fixes #26131, props jeremyfelt.
Built from https://develop.svn.wordpress.org/trunk@26424


git-svn-id: http://core.svn.wordpress.org/trunk@26324 1a063a9b-81f0-0310-95a4-ce76da25c4cd