About page updates.
 * Live-update the number of active translations.
 * Finalize most strings.
 * Lazily remove links to admin-only screens based on cap checks.
see #30435.


git-svn-id: https://develop.svn.wordpress.org/trunk@30840 602fd350-edb4-49c9-b593-d223f7449a82
Finalize more about page strings. see #30435.


git-svn-id: https://develop.svn.wordpress.org/trunk@30841 602fd350-edb4-49c9-b593-d223f7449a82
Do not autofocus text fields on page load on mobile devices. This is currently broken in many mobile browsers:
- iOS Safari opens the keyboard and auto-scrolls on the first tap anywhere on the screen triggering the click at an unexpected place. That makes it impossible to follow links or press buttons.
- Chrome on iOS opens the keyboard on load and may scroll the focused field off screen.
- The Android 4.4 browser only highlights the field, the user has to tap it to open the keyboard and type.
See #30703.

git-svn-id: https://develop.svn.wordpress.org/trunk@30842 602fd350-edb4-49c9-b593-d223f7449a82
iOS: do not autofocus the readonly textarea with the code for wp-config.php in setup-config.php.
See #30703.

git-svn-id: https://develop.svn.wordpress.org/trunk@30843 602fd350-edb4-49c9-b593-d223f7449a82
Fix menu shakiness when over-scrolling in Chrome and Safari on MacOS.
See #30692.

git-svn-id: https://develop.svn.wordpress.org/trunk@30844 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: Update the .pot file for [30834].

fixes #30152.

git-svn-id: https://develop.svn.wordpress.org/trunk@30845 602fd350-edb4-49c9-b593-d223f7449a82
In `WP_Meta_Query`, interpret 'value' correctly when used with EXISTS/NOT EXISTS.

As in earlier versions, EXISTS with a value is equivalent to '=', while NOT
EXISTS should always ignore 'value'.

Props barrykooij.
Fixes #30681 for trunk.

git-svn-id: https://develop.svn.wordpress.org/trunk@30846 602fd350-edb4-49c9-b593-d223f7449a82
Customizer: Don't escape control descriptions in JavaScript templates.

fixes #30682 for trunk.

git-svn-id: https://develop.svn.wordpress.org/trunk@30847 602fd350-edb4-49c9-b593-d223f7449a82
Customizer: Re-add the possibility to remove and restore a default background image.

see #21483.
fixes #30683 for trunk.

git-svn-id: https://develop.svn.wordpress.org/trunk@30849 602fd350-edb4-49c9-b593-d223f7449a82
Improve the fix for menu shakiness when over-scrolling. Recalculate heights on editor auto-resize.
See #30692.

git-svn-id: https://develop.svn.wordpress.org/trunk@30852 602fd350-edb4-49c9-b593-d223f7449a82
Editor, new DFW: fix fading out for the right sidebar in IE. Fixes #30714.

git-svn-id: https://develop.svn.wordpress.org/trunk@30853 602fd350-edb4-49c9-b593-d223f7449a82
Avoid repeatedly calling is_tax( 'post_format', '...' ) in get_the_archive_title().

see #21995.


git-svn-id: https://develop.svn.wordpress.org/trunk@30854 602fd350-edb4-49c9-b593-d223f7449a82
No need for wp_get_password_hint() to be prefixed as if it is private.

see #21243.


git-svn-id: https://develop.svn.wordpress.org/trunk@30855 602fd350-edb4-49c9-b593-d223f7449a82
Rename _wp_clear_update_cache() to wp_clean_update_cache().

This makes it match most cache-clearing functions, including the ones it wraps. Also no need for it to be prefixed as "private."

wp_clean_plugins_cache() doesn't always exist, so as a quick fix, clear the transient we care to clear.

see #30369.


git-svn-id: https://develop.svn.wordpress.org/trunk@30856 602fd350-edb4-49c9-b593-d223f7449a82
About page design for 4.1.

props melchoyce and ryelle, who again outdid themselves.
see #30435.


git-svn-id: https://develop.svn.wordpress.org/trunk@30857 602fd350-edb4-49c9-b593-d223f7449a82
Background Updates: Pass back whether Group Writable support is being leveraged for an update to the WordPress.org API.
See #30245


git-svn-id: https://develop.svn.wordpress.org/trunk@30860 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: remove Genericons as a dependency from loading the main stylesheet.

Props iamtakashi, fixes #30532.

git-svn-id: https://develop.svn.wordpress.org/trunk@30865 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fourteen: remove Genericons as a dependency from loading the main stylesheet and IE-specific stylesheet. See #30532.

git-svn-id: https://develop.svn.wordpress.org/trunk@30866 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: remove license details for the image shown in the theme  screenshot file as it is Creative Commons Zero, which doesn't require attribution.

Props iamtakashi, fixes #30156.

git-svn-id: https://develop.svn.wordpress.org/trunk@30867 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Twelve: fix widget stacking problem in older IE browsers for Front Page template.

Props TomasM, hiwhatsup. Fixes #28938.

git-svn-id: https://develop.svn.wordpress.org/trunk@30868 602fd350-edb4-49c9-b593-d223f7449a82