In the `wp_new_blog_notification()` email template, include the login url.

Props obenland, georgestephanis.
Fixes #21089.

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Reorder placeholders for consistency. see [29806].

see #21089.
Built from https://develop.svn.wordpress.org/trunk@29807


git-svn-id: http://core.svn.wordpress.org/trunk@29573 1a063a9b-81f0-0310-95a4-ce76da25c4cd
WP_Comment_Query: comment__in, comment__not_in, post__in, post__not_in.

Props nofearinc, mordauk, boonebgorges

Fixes #25386
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git-svn-id: http://core.svn.wordpress.org/trunk@29574 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a class attribute for submit button in comment form.

props bainternet.
fixes #20446.
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