Cleanup incorrect duplicate comments for hooks in wp-admin/edit-tag-form.php introduced in [26274].

Also corrects the @since version for {$taxonomy}_term_new_form_tag in wp-admin/edit-tags.php.

Props kpdesign. See #25532.

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Inline documentation for hooks in wp-admin/includes/class-wp-links-list-table.php.

Props JoshuaAbenazer, kpdesign.
Fixes #26052.

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Inline documentation for hooks in wp-admin/includes/class-wp-ms-sites-list-table.php.

Props ShinichiN, kpdesign.
Fixes #25607.

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Inline documentation for hooks in wp-admin/includes/class-wp-ms-users-list-table.php.

Props ShinichiN, kpdesign.
Fixes #25612.

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Inline documentation for hooks in wp-admin/theme-install.php.

Props leewillis77 and kpdesign for the initial patches.
Fixes #25823.

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Inline documentation for hooks in wp-admin/user/admin.php.

Props leewillis77 for the initial patch. Props kpdesign.
Fixes #25825.

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Inline documentation for hooks in wp-admin/plugins.php.

Props a.hoereth and kpdesign for the initial patches.
Fixes #25836.

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git-svn-id: http://core.svn.wordpress.org/trunk@26246 1a063a9b-81f0-0310-95a4-ce76da25c4cd