Inline documentation for hooks in wp-admin/edit-link-form.php.

props raamdev.
fixes #25447.
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Fix docblock formatting. fixes #25893.
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Define ajaxurl in the customizer.

props celloexpressions.
see #25866.
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Remove the code for setting ajaxurl from Twenty Fourteen.

props celloexpressions.
fixes #25866.
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Twenty Fourteen: changes to JavaScript files to pass `jshint`, props jorbin. Fixes #25908 #25909 #25910.

 * Add global variable flags to top of JS files.
 * Group variable declarations correctly.
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Make suggest script visible in the customizer.

props celloexpressions for initial patch.
see #25867.
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Remove the code for increasing z-index for the tag suggestion script from Twenty Fourteen. 

fixes #25867.
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Fix the X-UA-Compatible header for IE8, fixes #25575
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Fix canonical redirection of `cat` as described in #15256 by rolling the `cat` query var into `tax_query`, instead of `category__in` / `category__not_in`. Top-level categories were only redirecting properly if they had no children.

All unit tests pass. Tests marked for #15256 are no longer skipped.

Fixes #15256.
Props dd32.


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Twenty Fourteen: update the theme description with more information about theme features such as Featured Content and how to set it up. See #25837.
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Make HTML tag searches for `<code>` and `<pre>` case-insensitive in `make_clickable()`.

Props bpetty.
Fixes #23756.


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Change `nofollow` to `follow` in `wp_robots_noindex()`. "The noindex is fine, the nofollow stops any link equity from that URL, so that's actually a bad idea."

Props joostdevalk.
Fixes #22876.


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Twenty Fourteen: first pass at older Internet Explorer browser support. Props iamtakashi, see #25036.
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