Adjust some strings in wp-signup.php.
 * Remove double space.
 * Remove outer HTML.

props pavelevap, SergeyBiryukov.
fixes #22306.



git-svn-id: https://core.svn.wordpress.org/trunk@24058 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Wait until keyup to set the slug input on the post page, otherwise the final character is not stored. props SergeyBiryukov, fixes #23613.



git-svn-id: https://core.svn.wordpress.org/trunk@24059 1a063a9b-81f0-0310-95a4-ce76da25c4cd