Ensure the mixed type of `string|int` is reflected on the `$title` parameter in `wp_die()`.

The ability to pass an error code as short-hand to the `$title` and `$args` parameters was added in r30355. Changes also include cleaned-up formatting and line-wraps for other documentation in the DocBlock.

See [30355]. Fixes #10551.


git-svn-id: https://develop.svn.wordpress.org/trunk@30379 602fd350-edb4-49c9-b593-d223f7449a82
Clarify/correct inline documentation in wp-includes/l10n.php.

* Add a missing `@return` description for `load_default_textdomain()`
* Clarify the `@param` description for `$locale` with an inline `@see` tag
* Ensure the correct parameter variable is used when documenting `$args` for `wp_dropdown_languages()`

Props camdensegal.
Fixes #30385.


git-svn-id: https://develop.svn.wordpress.org/trunk@30380 602fd350-edb4-49c9-b593-d223f7449a82
Add missing documentation for the `$password` parameter, passed to the `check_password` hook.

Props coffee2code.
Fixes #30311.


git-svn-id: https://develop.svn.wordpress.org/trunk@30381 602fd350-edb4-49c9-b593-d223f7449a82
Add some missing inline documentation for methods in the `WP_Widget` class in wp-includes/widgets.php.

Props ericlewis, jazzs3quence.
See #30315.


git-svn-id: https://develop.svn.wordpress.org/trunk@30382 602fd350-edb4-49c9-b593-d223f7449a82
Improvements to `wp_make_link_relative()`.

* Support relative URL input.
* When the URL being made relative has another URL as a parameter, don't make the second URL relative.

Props voldemortensen.
Fixes #30373.

git-svn-id: https://develop.svn.wordpress.org/trunk@30383 602fd350-edb4-49c9-b593-d223f7449a82
Background Updates: Introduce support to take advantage of Group Writable (or World Writable) to Core Background updates.
This is only enabled when new files will not be installed during the update (as indicated by the WordPress.org API), and does not apply to Plugin/Theme/Translation Background Updates.

Additionally, the code to determine if the 'direct' filesystem transport should be used has been tweaked for wider support (where getmyuid() was unavailalbe) which fixes #10424

See #10205, #30245


git-svn-id: https://develop.svn.wordpress.org/trunk@30384 602fd350-edb4-49c9-b593-d223f7449a82
TinyMCE: fix the tooltip for 'alignnone' button on the image toolbar. Props johnbillion, see #30147.

git-svn-id: https://develop.svn.wordpress.org/trunk@30385 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Thirteen: fix non-responsive layout in IE8. Props phpmypython, fixes #24194.

git-svn-id: https://develop.svn.wordpress.org/trunk@30386 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fourteen: improve post thumbnail HTML output.

 * Add `aria-hidden` attribute to reduce verbosity on archive pages.
 * Add alt text in archives to avoid confusing link texts, see #30076 for context in Twenty Fifteen.

Props hiwhatsup, joedolson. Fixes #30144.

git-svn-id: https://develop.svn.wordpress.org/trunk@30387 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: Making the sidebar sticky for everyone. When we have a long sidebar, let it scroll with the content, but fixing the sidebar and no longer scrolling when we get to the end of the sidebar content. Scroll up and the sidebar starts scrolling up to, eventually staying fixed when it gets back to the top.

Props celloexpressions, avryl, fixes #30366.




git-svn-id: https://develop.svn.wordpress.org/trunk@30388 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fourteen: replace ellipses appended to automatically generated excerpts with both ellipses and a "Continue Reading" link to meet accessibility-ready requirements.

Props davidakennedy, lancewillett. Fixes #30176.

git-svn-id: https://develop.svn.wordpress.org/trunk@30389 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Thirteen: replace ellipses appended to automatically generated excerpts with both ellipses and a "Continue Reading" link to meet accessibility-ready requirements.

Props davidakennedy, lancewillett. Fixes #30178.

git-svn-id: https://develop.svn.wordpress.org/trunk@30390 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: Check if we're in the customizer before we avoid outputting HTML for an empty tagline. Avoids an issue with a not-updating customizer preview of the tagline if you're going in with an empty tagline.

Props philiparthurmoore, celloexpressions, fixes #30358.



git-svn-id: https://develop.svn.wordpress.org/trunk@30391 602fd350-edb4-49c9-b593-d223f7449a82
Better test method name in formatting/IsEmail.php.

Props dlh.
Fixes #30397.

git-svn-id: https://develop.svn.wordpress.org/trunk@30392 602fd350-edb4-49c9-b593-d223f7449a82
Accessibility: hide admin menu separators from screen readers.

props afercia. fixes #30010.


git-svn-id: https://develop.svn.wordpress.org/trunk@30393 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: doc cleanup, addresses removing periods from file header summaries, some spacing, loop documentation, and https instead of http.

Props DrewAPicture, MikeHansenMe, see #30149.



git-svn-id: https://develop.svn.wordpress.org/trunk@30394 602fd350-edb4-49c9-b593-d223f7449a82
Slide the admin menu out to the right when DFW mode kicks in and RTL is in use.

Fixes #30356
Props yoavf


git-svn-id: https://develop.svn.wordpress.org/trunk@30395 602fd350-edb4-49c9-b593-d223f7449a82
Introduce two new filters to the post revisions screen:

 * `process_text_diff_html` for contextually filtering a diffed line. Allows for the line to be processed in a different manner to the default `htmlspecialchars`.
 * `revision_text_diff_options` for filtering the options passed to `wp_text_diff()` when viewing a post revision.

Fixes #24908
Props adamsilverstein


git-svn-id: https://develop.svn.wordpress.org/trunk@30396 602fd350-edb4-49c9-b593-d223f7449a82
TinyMCE: update to the latest dev. version, 4.1.6+. Fixes #30411.

git-svn-id: https://develop.svn.wordpress.org/trunk@30397 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: escaping here breaks color schemes.

Props celloexpressions, iamtakashi, fixes #30409.




git-svn-id: https://develop.svn.wordpress.org/trunk@30398 602fd350-edb4-49c9-b593-d223f7449a82