Decode the sample permalink shown to the user. This avoids showing encoded non-Latin characters in the sample permalink.

Fixes #16496
Props linuxologos

Built from https://develop.svn.wordpress.org/trunk@30364


git-svn-id: http://core.svn.wordpress.org/trunk@30363 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove a stray translator comment for a non-translatable string added in [30209] See #27238

Built from https://develop.svn.wordpress.org/trunk@30365


git-svn-id: http://core.svn.wordpress.org/trunk@30364 1a063a9b-81f0-0310-95a4-ce76da25c4cd