Customizer: Use theme support defaults for background images.

props philipjohn.
fixes #28586.

git-svn-id: https://develop.svn.wordpress.org/trunk@29103 602fd350-edb4-49c9-b593-d223f7449a82
Media Grid, for audio files:

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

See #28839.


git-svn-id: https://develop.svn.wordpress.org/trunk@29104 602fd350-edb4-49c9-b593-d223f7449a82
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.


git-svn-id: https://develop.svn.wordpress.org/trunk@29105 602fd350-edb4-49c9-b593-d223f7449a82
Media Grid, for audio files: show Bitrate in the Edit Attachments modal a la the Edit Post screen.

See #28839.


git-svn-id: https://develop.svn.wordpress.org/trunk@29106 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for WP_Http_Cookie::__construct() into a hash notation.

Props coffee2code for the initial patch.
See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29107 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `_walk_bookmarks()` and `wp_list_bookmarks()` into hash notations.

Props coffee2code for the initial patch.
See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29108 602fd350-edb4-49c9-b593-d223f7449a82
Add indentation for the hash notation missed in [29108].

See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29109 602fd350-edb4-49c9-b593-d223f7449a82
Add support for secure wordpress.tv embeds (thanks stephdau). See #28507.

git-svn-id: https://develop.svn.wordpress.org/trunk@29110 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `get_bookmarks()` into a hash notation.

Props coffee2code for the initial patch.
See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29111 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `wp_page_menu()` into a hash notation.

Props coffee2code for the initial patch/
See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29112 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `get_posts()` into a hash notation.

Props coffee2code for the initial patch.
See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29113 602fd350-edb4-49c9-b593-d223f7449a82
Update the oEmbed provider inline docs

git-svn-id: https://develop.svn.wordpress.org/trunk@29114 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `wp_dropdown_users()` into a hash notation.

See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29115 602fd350-edb4-49c9-b593-d223f7449a82
Convert default arguments documentation for `wp_insert_user()` into a hash notation.

See #28841.


git-svn-id: https://develop.svn.wordpress.org/trunk@29116 602fd350-edb4-49c9-b593-d223f7449a82
Editor scrolling: disable on mobile devices and hide the resize handle. See #28328.

git-svn-id: https://develop.svn.wordpress.org/trunk@29117 602fd350-edb4-49c9-b593-d223f7449a82
Repent for our original OOP sins and doc blocks as pertains to access modifiers in List Table + subclasses.

Props SergeyBiryukov.
See #28843 and [28583].


git-svn-id: https://develop.svn.wordpress.org/trunk@29118 602fd350-edb4-49c9-b593-d223f7449a82
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].


git-svn-id: https://develop.svn.wordpress.org/trunk@29119 602fd350-edb4-49c9-b593-d223f7449a82