Allow the role attribute in kses for all elements.

props mikecorkum.
fixes #24098.

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Add jquery.masonry.min.js. fixes #25351.

Built from https://develop.svn.wordpress.org/trunk@27389


git-svn-id: http://core.svn.wordpress.org/trunk@27237 1a063a9b-81f0-0310-95a4-ce76da25c4cd