Customizer: Use theme support defaults for background images.

props philipjohn.
fixes #28586.
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git-svn-id: http://core.svn.wordpress.org/trunk@28889 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid, for audio files:

* Show `artist` and `album` fields in the Edit Attachment modal
* Sync their values on `change`

See #28839.

Built from https://develop.svn.wordpress.org/trunk@29104


git-svn-id: http://core.svn.wordpress.org/trunk@28890 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In the Post/Select frames, for audio files:

* Show `artist` and `album` fields in the Attachment Details sidebar
* Sync their values on `change`

See #28839.

Built from https://develop.svn.wordpress.org/trunk@29105


git-svn-id: http://core.svn.wordpress.org/trunk@28891 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid, for audio files: show Bitrate in the Edit Attachments modal a la the Edit Post screen.

See #28839.

Built from https://develop.svn.wordpress.org/trunk@29106


git-svn-id: http://core.svn.wordpress.org/trunk@28892 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for WP_Http_Cookie::__construct() into a hash notation.

Props coffee2code for the initial patch.
See #28841.

Built from https://develop.svn.wordpress.org/trunk@29107


git-svn-id: http://core.svn.wordpress.org/trunk@28893 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `_walk_bookmarks()` and `wp_list_bookmarks()` into hash notations.

Props coffee2code for the initial patch.
See #28841.

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git-svn-id: http://core.svn.wordpress.org/trunk@28894 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add indentation for the hash notation missed in [29108].

See #28841.

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git-svn-id: http://core.svn.wordpress.org/trunk@28895 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add support for secure wordpress.tv embeds (thanks stephdau). See #28507.
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git-svn-id: http://core.svn.wordpress.org/trunk@28896 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `get_bookmarks()` into a hash notation.

Props coffee2code for the initial patch.
See #28841.

Built from https://develop.svn.wordpress.org/trunk@29111


git-svn-id: http://core.svn.wordpress.org/trunk@28897 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `wp_page_menu()` into a hash notation.

Props coffee2code for the initial patch/
See #28841.

Built from https://develop.svn.wordpress.org/trunk@29112


git-svn-id: http://core.svn.wordpress.org/trunk@28898 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `get_posts()` into a hash notation.

Props coffee2code for the initial patch.
See #28841.

Built from https://develop.svn.wordpress.org/trunk@29113


git-svn-id: http://core.svn.wordpress.org/trunk@28899 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update the oEmbed provider inline docs
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git-svn-id: http://core.svn.wordpress.org/trunk@28900 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `wp_dropdown_users()` into a hash notation.

See #28841.

Built from https://develop.svn.wordpress.org/trunk@29115


git-svn-id: http://core.svn.wordpress.org/trunk@28901 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert default arguments documentation for `wp_insert_user()` into a hash notation.

See #28841.

Built from https://develop.svn.wordpress.org/trunk@29116


git-svn-id: http://core.svn.wordpress.org/trunk@28902 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor scrolling: disable on mobile devices and hide the resize handle. See #28328.
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git-svn-id: http://core.svn.wordpress.org/trunk@28903 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Repent for our original OOP sins and doc blocks as pertains to access modifiers in List Table + subclasses.

Props SergeyBiryukov.
See #28843 and [28583].

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git-svn-id: http://core.svn.wordpress.org/trunk@28904 1a063a9b-81f0-0310-95a4-ce76da25c4cd
The 2nd argument to `array_unique()` was added to PHP in 5.2.9, so don't use it. We have to use our own code to return unique terms when `fields => all` in `wp_get_object_terms()`.

See #28843 and [28583].

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git-svn-id: http://core.svn.wordpress.org/trunk@28905 1a063a9b-81f0-0310-95a4-ce76da25c4cd