Better 'Connection lost' notice that includes an indication of activity. fixes #24695.



git-svn-id: https://core.svn.wordpress.org/trunk@24743 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove old, less relevant and in some cases obsolete readme sections. see #23025.



git-svn-id: https://core.svn.wordpress.org/trunk@24744 1a063a9b-81f0-0310-95a4-ce76da25c4cd