Accept rel attributes in the toolbar's add_node() method.

props stephcook22.
fixes #27234.

Built from https://develop.svn.wordpress.org/trunk@27367


git-svn-id: http://core.svn.wordpress.org/trunk@27217 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor: throttle scrolling of the main window when the editor is active and is being scrolled with the mouse wheel or a trackpad, see #27013
Built from https://develop.svn.wordpress.org/trunk@27368


git-svn-id: http://core.svn.wordpress.org/trunk@27218 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Reference https://wordpress.org rather than http://wordpress.org in strings, links, comments, etc.

props Ipstenu, markjaquith.
see #27115.

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git-svn-id: http://core.svn.wordpress.org/trunk@27219 1a063a9b-81f0-0310-95a4-ce76da25c4cd