A negative term parent value should be sanitized to 0, not 1. Fix a regression in sanitize_term_field() caused by [26010].

props mattheu for initial patch.
fixes #25852.
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Add X-UA-Compatible meta tag in the admin, locking the compatibility mode in IE to the highest supported document mode. Fixes #25575.
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git-svn-id: http://core.svn.wordpress.org/trunk@25959 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: minor template fixes and a placeholder screenshot.
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git-svn-id: http://core.svn.wordpress.org/trunk@25960 1a063a9b-81f0-0310-95a4-ce76da25c4cd