TinyMCE: when clicking on a character in the Charmap modal, don't close it if the Crtl key is pressed. Makes it possible to insert several special chars in a row. See #27107.
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git-svn-id: http://core.svn.wordpress.org/trunk@27041 1a063a9b-81f0-0310-95a4-ce76da25c4cd