Clarify `submit_button()` `$type` parameter docs to mention that the value doubles as the CSS class attribute.

See #27070

Built from https://develop.svn.wordpress.org/trunk@27135


git-svn-id: http://core.svn.wordpress.org/trunk@27002 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Improve inline documentation for `submit_button()`.

See #27070.

Built from https://develop.svn.wordpress.org/trunk@27136


git-svn-id: http://core.svn.wordpress.org/trunk@27003 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix docs spacing missed in [27136].

See #27070.

Built from https://develop.svn.wordpress.org/trunk@27137


git-svn-id: http://core.svn.wordpress.org/trunk@27004 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for the `wp_insert_attachment_data` filter hook, added in [27130].

Fixes #20547.

Built from https://develop.svn.wordpress.org/trunk@27138


git-svn-id: http://core.svn.wordpress.org/trunk@27005 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation tweaks for `has_image_size()` and `remove_image_size()`.

See #26951.

Built from https://develop.svn.wordpress.org/trunk@27139


git-svn-id: http://core.svn.wordpress.org/trunk@27006 1a063a9b-81f0-0310-95a4-ce76da25c4cd
has_image_size()'s parameter should be required. see [27139], see #26951.

Built from https://develop.svn.wordpress.org/trunk@27140


git-svn-id: http://core.svn.wordpress.org/trunk@27007 1a063a9b-81f0-0310-95a4-ce76da25c4cd