Unbreak `Media Trash` after [28788].

Props SergeyBiryukov.
Fixes #29080.

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git-svn-id: http://core.svn.wordpress.org/trunk@29117 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove remaining title attributes from default-widgets.php, with the exception of the one on the link to WordPress.org. fixes #26552.

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git-svn-id: http://core.svn.wordpress.org/trunk@29118 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Bail on `update_user_meta()` when `$object_id` is non-numeric.

Adds unit test.

Props jacklenox, wonderboymusic.
Fixes #28315.

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git-svn-id: http://core.svn.wordpress.org/trunk@29119 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Match background color in DFW and adapt the dashed outline color.

fixes #28330. props avryl, ipstenu.
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git-svn-id: http://core.svn.wordpress.org/trunk@29120 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use the word "Count" instead of the post type label in taxonomy list tables to prevent layout issues. It is also more accurate, as it represents a count of all post types, not just one.

props philipjohn, GaVrA, seanchayes. fixes #17209.

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git-svn-id: http://core.svn.wordpress.org/trunk@29121 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Clarify that `get_the_date()`, `get_the_time()`, `get_post_time()` and `get_post_modified_time()` should return `false` when `get_post()` is `null`.

Adds unit tests.

Props GaryJ, SergeyBiryukov, tollmanz.
Fixes #28310.

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git-svn-id: http://core.svn.wordpress.org/trunk@29122 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert [28640] as per @DH-Shredder.

See #24380.

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git-svn-id: http://core.svn.wordpress.org/trunk@29123 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Disable background page scrolling when modals are open.

props celloexpressions.
fixes #29074.
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git-svn-id: http://core.svn.wordpress.org/trunk@29124 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin install: Add missing closing HTML tags.

props jwenerd.
fixes #29090. see #28673.
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git-svn-id: http://core.svn.wordpress.org/trunk@29125 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Avoid an undefined index notice in wp_reschedule_event().

props paulschreiber.
fixes #29077.
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git-svn-id: http://core.svn.wordpress.org/trunk@29126 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add some braces to [29225]. 

see #28673.
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git-svn-id: http://core.svn.wordpress.org/trunk@29127 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor scrolling: run one more adjust() 200ms after scroll or resize in case the browser is slow to re-calculate the element heights and pin/unpin the toolbars. See #28328, fixes #29059.
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git-svn-id: http://core.svn.wordpress.org/trunk@29128 1a063a9b-81f0-0310-95a4-ce76da25c4cd
RTL: Fix media attach modal alignment.

props SergeyBiryukov.
fixes #28010.
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git-svn-id: http://core.svn.wordpress.org/trunk@29129 1a063a9b-81f0-0310-95a4-ce76da25c4cd
To improve troubleshooting use `esc_html()` for a failed embed.

see #28195.
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