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.

Built from https://develop.svn.wordpress.org/trunk@30840


git-svn-id: http://core.svn.wordpress.org/trunk@30830 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Finalize more about page strings. see #30435.

Built from https://develop.svn.wordpress.org/trunk@30841


git-svn-id: http://core.svn.wordpress.org/trunk@30831 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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.
Built from https://develop.svn.wordpress.org/trunk@30842


git-svn-id: http://core.svn.wordpress.org/trunk@30832 1a063a9b-81f0-0310-95a4-ce76da25c4cd
iOS: do not autofocus the readonly textarea with the code for wp-config.php in setup-config.php.
See #30703.
Built from https://develop.svn.wordpress.org/trunk@30843


git-svn-id: http://core.svn.wordpress.org/trunk@30833 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix menu shakiness when over-scrolling in Chrome and Safari on MacOS.
See #30692.
Built from https://develop.svn.wordpress.org/trunk@30844


git-svn-id: http://core.svn.wordpress.org/trunk@30834 1a063a9b-81f0-0310-95a4-ce76da25c4cd