Ensure that disabled select elements are distinguishable from normal ones. Fixes #26456, props TobiasBg.


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Core updates: Explicitly call wp_cache_delete() after a DB upgrade, as not all cache backends allow the entire backend to be flushed.

props dd32.
fixes #26173.

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Add new fit-content rules to accompany intrinsic width on adminbar dropdown wrappers. Fixes #26430, props Jayjdk.
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Inline documentation fixes for hooks and functions introduced in 3.8.0.

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Updates to the About page:

* A live color scheme preview
* Replace the hard-coded version number
* Copy edits
* New screenshots
* Size adjustments to the header and WP badge
* Capitalize 'Open Sans'

See #26387, props markoheijnen, ryelle, siobhan, melchoyce.


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Themes: If a theme only has a very-old-school 300px-wide screenshot (or narrower), don't stretch it.

props matveb.
fixes #26459.

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Themes: Adjust screenshot ratios.
 * On the details overlay, always show the full 4/3 ratio.
 * On the grid, reduce to ~3/2 only if the screen width is less than 1400px. Otherwise, show the screenshot at 4/3 ratio.

props matveb, nacin.
fixes #26159.

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Revert Twenty Ten's original screenshot. Was using Kubrick to test [26738]. I hope this gave lancewillett a laugh. see #26459.

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Dashboard: Restore a line that vanished from my editor to print recently published posts. Also fix an off-by-one error.

see [26704]. see #26066.

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Add missing about.color-schemes.png. See #26387.
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Responsive menu: fix calculation of the responsive trigger width from JS. It is affected by a vertical scrollbar width in some browsers. See #26458.
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Provide a default generic avatar icon in the My Account menu if avatars are disabled, ensuring that the link is visible at responsive sizes. See #25858.
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Adding autosave for color schemes and removing RTL handling. See #26387, props ryelle.
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Themes: Final gutter and breakpoint adjustments.

props matveb.
fixes #26462.

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RTL: Don't flip thumbnail positions in Insert Media window.
Restores pre-3.8 behavior.

props siobhyb for the initial patch.
fixes #26461.
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Bundled themes: new screenshots at 880x660 to maximize theme goodness in the new theme viewer design. See #26159.
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Visual refinements to the About page and screenshots. See #26387.
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I believe we're consistent about capitalizing Open Source elsewhere. See #26387.
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Updates to Dashicons classes.

props melchoyce.
fixes #26227.

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Themes: Avoid overlap with themes with small screenshots and no description.

props matveb.
fixes #26465.

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