Rachel Baker afa325993e REST API: Fix bug where comment author and author email could be an empty string when creating a comment.
If the `require_name_email` option is true, creating a comment with an empty string for the author name or email should not be accepted.  Both values can be an empty string on update.

Merges [39444] into the 4.7 branch.
Props flixos90, hnle, dd32, rachelbaker, jnylen0, ChopinBach, joehoyle, pento.

Fixes #38971 for 4.7.

Built from https://develop.svn.wordpress.org/branches/4.7@39446


git-svn-id: http://core.svn.wordpress.org/branches/4.7@39386 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-12-02 22:46:31 +00:00
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