Introduce a button on the user profile screen which clears all other sessions, and on the user editing screen which clears all sessions. Only appears when there are applicable sessions which can be cleared.

See #30264.
Props jorbin, ocean90, johnbillion


Built from https://develop.svn.wordpress.org/trunk@30333


git-svn-id: http://core.svn.wordpress.org/trunk@30332 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Improvements to [30333]:

* Move `.hide-if-no-js` class to table row
* Add a wrapper class
* Add missing translators comment

see #30264.
Built from https://develop.svn.wordpress.org/trunk@30334


git-svn-id: http://core.svn.wordpress.org/trunk@30333 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Site Language: Install translations on the fly.

The language dropdown now includes installed languages and all available translations when the filesystem is writable by WordPress.
Go to wp-admin/options-general.php, select one of the available translations, submit the form and let WordPress handle the rest.
Works for Multisite's Default Language too.

see #29395.
Built from https://develop.svn.wordpress.org/trunk@30335


git-svn-id: http://core.svn.wordpress.org/trunk@30334 1a063a9b-81f0-0310-95a4-ce76da25c4cd