Encode brackets in the load-scripts.php URL, as these are considered unsafe...

Encode brackets in the load-scripts.php URL, as these are considered unsafe characters and can be misunderstood. (See RFC 1738.) In particular, a "security" rewrite rule from a plugin blocked URLs with unencoded brackets. fixes #22899 for trunk.



git-svn-id: https://core.svn.wordpress.org/trunk@23201 1a063a9b-81f0-0310-95a4-ce76da25c4cd