Link post title in Comments On "Post title"

[scribu]

Since r16617, if you are on edit-comments.php?p=123, there is no way to go directly to post.php?post=123&action=edit.

Since the screen title contains the post's title, I propose we make that link to the post editing screen.

[scribu]

I couldn't use $title variable because it gets strip_tags()ed along the way.

[scribu]

Don't strip_tags() on $title global. Could cause other problems

[automattor]

(In [16619]) Link post title on comments for a single post screen. Fixes #15609