Eliminate the transition animation on the responsive sidebar; set the responsive sidebar to display: none by default so it doesn't appear momentarily when loading the page. Fixes #25969.


Built from https://develop.svn.wordpress.org/trunk@26414


git-svn-id: http://core.svn.wordpress.org/trunk@26314 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Match the background color of the responsive toggle button active state to -submenu-background, so it matches color schemes. See #25858.
Built from https://develop.svn.wordpress.org/trunk@26415


git-svn-id: http://core.svn.wordpress.org/trunk@26315 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Hide registered and users columns in Sites table on small screens to prevent columms from becoming too narrow. Fixes #25973, props johnbillion.
Built from https://develop.svn.wordpress.org/trunk@26416


git-svn-id: http://core.svn.wordpress.org/trunk@26316 1a063a9b-81f0-0310-95a4-ce76da25c4cd