In `edit_form_image_editor()`, `$filename` and `$title` are set and then unused. They shall be removed.

See #27882.


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git-svn-id: http://core.svn.wordpress.org/trunk@28099 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `general-template.php` - remove dead code:

* In `get_calendar()`, `$cache` is set twice. The first is useless. 
* In `wp_default_editor()`, `$user` is (accidentally) assigned in a condition. Since it is never used, this is unnecessary.
* In `language_attributes()`, `$output` is set twice before it is ever used. The first is unnecessary. 
* In `paginate_links()`, `$n` is set twice before it is ever used. The first is unnecessary.

See #27882.


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git-svn-id: http://core.svn.wordpress.org/trunk@28102 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Custom header: Avoid warnings in the process_default_headers() method.

props obenland.
fixes #27850.

Built from https://develop.svn.wordpress.org/trunk@28275


git-svn-id: http://core.svn.wordpress.org/trunk@28103 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Multisite: Fix case sensitivity regressions in 3.9.

props jeremyfelt.
fixes #27866.

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git-svn-id: http://core.svn.wordpress.org/trunk@28104 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WP_List_Table::display_rows_or_placeholder()`, the call to `get_column_info()` in unnecessary and unused. The call to `get_column_count()` immediately after makes the same call internally.

See #27882.


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git-svn-id: http://core.svn.wordpress.org/trunk@28107 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Multisite: Treat 'www' as a special subdomain, reversing 3.9 regression.

props jeremyfelt.
fixes #27927.

Built from https://develop.svn.wordpress.org/trunk@28280


git-svn-id: http://core.svn.wordpress.org/trunk@28108 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Where a filter no longer exists, it need not be notated.

Fixes #24444. See r28258.

Built from https://develop.svn.wordpress.org/trunk@28283


git-svn-id: http://core.svn.wordpress.org/trunk@28111 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add missing Dashicons classes to User Admin menu.

props imath.
see #28144, #26630.
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git-svn-id: http://core.svn.wordpress.org/trunk@28112 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a filter for wp_list_comments() arguments.

props greenshady, hlashbrooke.
fixes #19581.
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git-svn-id: http://core.svn.wordpress.org/trunk@28113 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add context for 'Previous' and 'Next' theme strings.

see #28120, for trunk.
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git-svn-id: http://core.svn.wordpress.org/trunk@28114 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use a consistent context to remove duplicate strings.

props pavelevap.
fixes #28123.
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git-svn-id: http://core.svn.wordpress.org/trunk@28115 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Translate a string added in 3.7 but never translated previously.

props andrezrv.
fixes #28025.
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git-svn-id: http://core.svn.wordpress.org/trunk@28116 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove unreachable `break` statements in `wp-admin/comments.php`. `break` is unnecessary after `die`, `exit`, and `wp_die`.

See #27882.

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git-svn-id: http://core.svn.wordpress.org/trunk@28117 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `wp-admin/custom-header.php`, `$default_color` is set twice before it is used. The first is unnecessary.

See #27882.

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git-svn-id: http://core.svn.wordpress.org/trunk@28118 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove unreachable `break` statements in `wp-admin/edit-tags.php`. `break` is unnecessary after `die`, `exit`, and `wp_die`.

See #27882.

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git-svn-id: http://core.svn.wordpress.org/trunk@28119 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `ajax-actions.php`, remove dead code:

* In `wp_ajax_add_tag()`, `$post_type` is set and never used.
* In `wp_ajax_hidden_columns()`, `$hidden` is set twice, but only checks for the existence of `$_POST['hidden']` the first time. The two lines can be combined and work together.
* In `wp_ajax_inline_save()`, `$mode` is set and never used.
* In `wp_ajax_find_posts()`, `$searchand = $search = '';` is leftover cruft, neither variable is used. `$wpdb` does not need to be imported, it is never used.
* In `wp_ajax_wp_fullscreen_save_post()`, `$post_type` is set and never used.
* In `wp_ajax_save_attachment_order()`, `$post` is set and never used.
* In `wp_ajax_send_attachment_to_editor()`, `$title` is set and never used. 

See #27882.

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git-svn-id: http://core.svn.wordpress.org/trunk@28120 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WP_Media_List_Table`, remove dead code:

* In `->prepare_items()`, importing `$wpdb` is unnecessary.
* In `->get_columns()`, `$taxonomies` is set twice before it is used.
* In `->display_rows()`, `$taxonomy_object` is set and never used.

See #27882.


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git-svn-id: http://core.svn.wordpress.org/trunk@28121 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Custom Header: Fix logic when a theme doesn't set `default-text-color`.

fixes #28042.
Built from https://develop.svn.wordpress.org/trunk@28294


git-svn-id: http://core.svn.wordpress.org/trunk@28122 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WP_MS_Users_List_Table::get_views()`, remove dead code:

* `$wp_roles` doesn't need to be imported.
* `$current_role` is set and never used.

See #27882.


Built from https://develop.svn.wordpress.org/trunk@28295


git-svn-id: http://core.svn.wordpress.org/trunk@28123 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WP_Users_List_Table::get_views()`, `$current_role` is set and never used.

See #27882.


Built from https://develop.svn.wordpress.org/trunk@28296


git-svn-id: http://core.svn.wordpress.org/trunk@28124 1a063a9b-81f0-0310-95a4-ce76da25c4cd