`audio`, `video`, and `playlist` shortcodes:

* Convert all instances of variable variables to array properties
* Eradicate use of `extract()`
* Rename `$atts` to `$html_atts` where collision with new `$atts` (shortcode atts holder) var might occur

See #22400, #27881.


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git-svn-id: http://core.svn.wordpress.org/trunk@28170 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Leverage `size_format()` when displaying `max_upload_size`: 
* In `media_upload_form()` 
* The `uploader-inline` Underscore template in the media modal. 

Replaces 2 buggy inline implementations that could display size units off by one, or size values off by one.

Fixes #25643.


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git-svn-id: http://core.svn.wordpress.org/trunk@28171 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use an interpolated hook name for `edit_{$post_type}_per_page` instead of `$per_page` and adjust docs accordingly.

Also references the correct variable for the `$posts_per_page` parameter in the `edit_posts_per_page` hook doc.

Props Otto42 for the initial patch.
See #26869.

Built from https://develop.svn.wordpress.org/trunk@28347


git-svn-id: http://core.svn.wordpress.org/trunk@28175 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use interpolation instead of concatenation for the `manage_{$screen->id}_columns` hook name.

Props Otto42.
See #26869.

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git-svn-id: http://core.svn.wordpress.org/trunk@28176 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert and rename the `$action` hook in wp-admin/admin-post to two dynamic hook sets.

* `admin_post_nopriv{$request_action}` is fired for logged-out users
* `admin_post{$request_action}` is fired for logged-in users

Props Otto42, DrewAPicture.
See #26869.

Built from https://develop.svn.wordpress.org/trunk@28349


git-svn-id: http://core.svn.wordpress.org/trunk@28177 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert [28349] in favor of retaining the single dynamic `admin_post*` hook.

See #26869.

Built from https://develop.svn.wordpress.org/trunk@28350


git-svn-id: http://core.svn.wordpress.org/trunk@28178 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Rename the `$action` hook in wp-admin/admin-post.php to `admin_post{$action}`.

Also, clarify documentation of priv vs nopriv prefixing of the hook name.

See #26869.

Built from https://develop.svn.wordpress.org/trunk@28351


git-svn-id: http://core.svn.wordpress.org/trunk@28179 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Minor phpDoc fixes for the `got_rewrite`, `got_url_rewrite`, and `documentation_ignore_functions` hooks.

Props GaryJ.
See #26869.

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git-svn-id: http://core.svn.wordpress.org/trunk@28180 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add baseline doc blocks for all ajax handlers in ajax-actions.php.

Fixes #28200.

Built from https://develop.svn.wordpress.org/trunk@28355


git-svn-id: http://core.svn.wordpress.org/trunk@28183 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix mid-file section header style in wp-admin/includes/ajax-actions.php.

See #28200.

Built from https://develop.svn.wordpress.org/trunk@28356


git-svn-id: http://core.svn.wordpress.org/trunk@28184 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add inline documentation of the default arguments for `wp_list_pages()`.

Props garza for the initial patches.
Fixes #11338.

Built from https://develop.svn.wordpress.org/trunk@28357


git-svn-id: http://core.svn.wordpress.org/trunk@28185 1a063a9b-81f0-0310-95a4-ce76da25c4cd
First pass at `wpview` logic for the `[embed]` shortcode. URLs on a their own line are parsed as well. The toolbar will appear with the "remove" button when the view is clicked. Edit has not been implemented yet.

Props avryl, wonderboymusic.
See #28195.


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git-svn-id: http://core.svn.wordpress.org/trunk@28186 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove the `title` attribute from markup generated in `wp-includes/category-template.php`:

* `get_category_parents()`
* `get_the_category_list()`
* `wp_generate_tag_cloud()`
* `Walker_Category::start_el()`	

Props joedolson.
Fixes #26557.	


Built from https://develop.svn.wordpress.org/trunk@28359


git-svn-id: http://core.svn.wordpress.org/trunk@28187 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `WP_Terms_List_Table::single_row()`, call `sanitize_term()` on the passed term (`$tag`).

Props oso96_2000, c3mdigital, scribu. 
It takes a village.
Fixes #16864.

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git-svn-id: http://core.svn.wordpress.org/trunk@28188 1a063a9b-81f0-0310-95a4-ce76da25c4cd
MediaElement players need `clear: both` to play nice with adjacent floated elements.

Fixes #27385.


Built from https://develop.svn.wordpress.org/trunk@28361


git-svn-id: http://core.svn.wordpress.org/trunk@28189 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `get_the_author_posts()`, if there is no current `$post`, return `0` and bail.

Props krogsgard, aaroncampbell.
Fixes #27998.


Built from https://develop.svn.wordpress.org/trunk@28362


git-svn-id: http://core.svn.wordpress.org/trunk@28190 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Support `loop` for `[audio]` and `[video]` shortcodes that specify files that are played using MediaElement's Flash plugin bridge.

Fixes #27368.


Built from https://develop.svn.wordpress.org/trunk@28363


git-svn-id: http://core.svn.wordpress.org/trunk@28191 1a063a9b-81f0-0310-95a4-ce76da25c4cd
When pausing "all" players attached to MCE views, don't reach into global scope and pause "every" player. Only pause the players bound to MCE views.

Fixes #27971.


Built from https://develop.svn.wordpress.org/trunk@28364


git-svn-id: http://core.svn.wordpress.org/trunk@28192 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update the default (WP-defined) styles for MediaElement players to be more in-line with our flat aesthetic. Use the new official colors. 

Props celloexpressions.
Fixes #27516.


Built from https://develop.svn.wordpress.org/trunk@28365


git-svn-id: http://core.svn.wordpress.org/trunk@28193 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Avoid a notice in `wp_save_image()` by checking `$meta['sizes']['thumbnail']` for `! empty()` before setting a variable to it.

Props MikeHansenMe.
Fixes #17736.


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git-svn-id: http://core.svn.wordpress.org/trunk@28194 1a063a9b-81f0-0310-95a4-ce76da25c4cd