Update `embedded.png` after running `grunt imagemin`.

After [30059] and [30079] we still had four images which could be minified. Three of them are handled by [30562], the last one by this.

fixes #30141.
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git-svn-id: http://core.svn.wordpress.org/trunk@30552 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: a shorter header on small screens when there is no header text or header image looks more correct.

Props iamtakashi, fixes #30326.



Built from https://develop.svn.wordpress.org/trunk@30564


git-svn-id: http://core.svn.wordpress.org/trunk@30553 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: pinching to zoom in on landscape on iPads is breaking the layout with the sticky sidebar. Providing a one-column view on those screens looks good and will likely prevent other bugs we don't even know about.

Props iamtakashi, fixes #30366.



Built from https://develop.svn.wordpress.org/trunk@30565


git-svn-id: http://core.svn.wordpress.org/trunk@30554 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: prevent too-wide tables from popping out of posts.

Props iamtakashi, fixes #30420


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git-svn-id: http://core.svn.wordpress.org/trunk@30555 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: remove unneeded custom header admin callbacks.

Props philiparthurmoore, fixes #30432.


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git-svn-id: http://core.svn.wordpress.org/trunk@30556 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update Akismet external in trunk to 3.0.3.


git-svn-id: http://core.svn.wordpress.org/trunk@30557 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: correct number of menus used in comments

Props jeherve, see #30149


Built from https://develop.svn.wordpress.org/trunk@30568


git-svn-id: http://core.svn.wordpress.org/trunk@30558 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: docs correction and cleanup.

Props DrewAPicture, see #30149.


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git-svn-id: http://core.svn.wordpress.org/trunk@30559 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: make sure the 'says:' in comments is readable by a screen-reader.

Fixes #30479.


Built from https://develop.svn.wordpress.org/trunk@30570


git-svn-id: http://core.svn.wordpress.org/trunk@30560 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: update the .pot file.

Props iamtakashi, fixes #30433.


Built from https://develop.svn.wordpress.org/trunk@30571


git-svn-id: http://core.svn.wordpress.org/trunk@30561 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fifteen: docs correction.

Props rachelbaker, DrewAPicture, fixes #30456


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git-svn-id: http://core.svn.wordpress.org/trunk@30562 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor:
- Add CSS reset for the TinyMCE fullscreen mode when used on the Edit Post screen.
- Fix loading of the old and new DFW buttons, use another arg. passed to WP_Editors.
- Reset editor-expand when exiting TinyMCE fullscreen mode.
Fixes #30453.
Built from https://develop.svn.wordpress.org/trunk@30573


git-svn-id: http://core.svn.wordpress.org/trunk@30563 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor: add a pointer for the new DFW button. Remove the wp350_media and wp360_revisions pointers from the same screens. See #30458.
Built from https://develop.svn.wordpress.org/trunk@30574


git-svn-id: http://core.svn.wordpress.org/trunk@30564 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix the PHPDoc example for _split_str_by_whitespace().
Props voldemortensen. Fixes #30504

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git-svn-id: http://core.svn.wordpress.org/trunk@30565 1a063a9b-81f0-0310-95a4-ce76da25c4cd