XML-RPC: Avoid a PHP notice in pingback_ping() method.

props jesin, simonp303.
fixes #29177.
Built from https://develop.svn.wordpress.org/trunk@29464


git-svn-id: http://core.svn.wordpress.org/trunk@29242 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add styling for various HTML5 input elements. props avryl. fixes #28262.

Built from https://develop.svn.wordpress.org/trunk@29465


git-svn-id: http://core.svn.wordpress.org/trunk@29243 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Better focus styling for buttons and button groups. props mattheu, avryl, celloexpressions. fixes #27826. see #28267.

Built from https://develop.svn.wordpress.org/trunk@29466


git-svn-id: http://core.svn.wordpress.org/trunk@29244 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Docblock corrections for `get_the_terms()` function and corresponding filter, and `registered_taxonomy` action. Fixes #29183.
Built from https://develop.svn.wordpress.org/trunk@29467


git-svn-id: http://core.svn.wordpress.org/trunk@29245 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Correct the docblock for the `registered_post_type` action. Fixes #29184.
Built from https://develop.svn.wordpress.org/trunk@29468


git-svn-id: http://core.svn.wordpress.org/trunk@29246 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Correct references to post-template.php in the inline docs.

props softmodeling.
fixes #29188.
Built from https://develop.svn.wordpress.org/trunk@29469


git-svn-id: http://core.svn.wordpress.org/trunk@29247 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Clearer visual differentiation between panels and sections in the customizer. props celloexpressions. see #28979.

Built from https://develop.svn.wordpress.org/trunk@29470


git-svn-id: http://core.svn.wordpress.org/trunk@29248 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: fix the 'editimage' plugin for touch devices. Better attempt to hide the onscreen keyboard when the media modal opens and TinyMCE is in focus. See #28595, #29166

Built from https://develop.svn.wordpress.org/trunk@29471


git-svn-id: http://core.svn.wordpress.org/trunk@29249 1a063a9b-81f0-0310-95a4-ce76da25c4cd
After [29422], make sure the internal array counter is not reset for the `$wp_filter` global.

Props kovshenin.
See #29070.

Built from https://develop.svn.wordpress.org/trunk@29472


git-svn-id: http://core.svn.wordpress.org/trunk@29250 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media modal: make sure the Close button is focused after attempting to close the onscreen keyboard on touch devices. Props celloexpressions, fixes #29166.
Built from https://develop.svn.wordpress.org/trunk@29473


git-svn-id: http://core.svn.wordpress.org/trunk@29251 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin details modal:

* Scroll all content, rather than the dual-pane scrolling awkwardness.
* Better align the header image and title overlay with the display on WordPress.org, at least at full-width.
* Move the close button outside of the modal itself, rather than overlay on top of colors we can't predict.

props stephdau, tellyworth, helen. fixes #27440.

Built from https://develop.svn.wordpress.org/trunk@29474


git-svn-id: http://core.svn.wordpress.org/trunk@29252 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Additional @return clarifications for get_the_terms(), get_the_tag_list(), and get_the_term_list().

see #29183.
Built from https://develop.svn.wordpress.org/trunk@29475


git-svn-id: http://core.svn.wordpress.org/trunk@29253 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Switch the Polldaddy oEmbed endpoint to HTTPS as it now redirects there. See #28507.
Built from https://develop.svn.wordpress.org/trunk@29476


git-svn-id: http://core.svn.wordpress.org/trunk@29254 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin install: Make plugin groups translatable.

props ocean90 for initial patch.
fixes #29092.
Built from https://develop.svn.wordpress.org/trunk@29477


git-svn-id: http://core.svn.wordpress.org/trunk@29255 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix the `wp-settings-*` cookies used in getUserSetting()/setUserSetting(). They should be set without `COOKIE_DOMAIN` to work properly for sub-domains. Fixes #29095.
Built from https://develop.svn.wordpress.org/trunk@29478


git-svn-id: http://core.svn.wordpress.org/trunk@29256 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix some documentation typos in various core files.

Props vlajos.
Fixes #29199.

Built from https://develop.svn.wordpress.org/trunk@29479


git-svn-id: http://core.svn.wordpress.org/trunk@29257 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin details: Remove some CSS rules that were unnecessary and causing issues in Firefox. see #27440.

Built from https://develop.svn.wordpress.org/trunk@29480


git-svn-id: http://core.svn.wordpress.org/trunk@29258 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In the Edit Attachment frame, when in Edit Image mode, add a key event for Escape. There are conflicting `keydown` handlers that don't propagate the event to the modal properly.

Fixes #29121.

Built from https://develop.svn.wordpress.org/trunk@29481


git-svn-id: http://core.svn.wordpress.org/trunk@29259 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Customizer: Fix ID attribute for a panel.

props celloexpressions.
fixes #29174.
Built from https://develop.svn.wordpress.org/trunk@29482


git-svn-id: http://core.svn.wordpress.org/trunk@29260 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: treat Edit Image like a `mode`, which it is, instead of a `state`, which it is not.

Fixes #29206.

Built from https://develop.svn.wordpress.org/trunk@29483


git-svn-id: http://core.svn.wordpress.org/trunk@29261 1a063a9b-81f0-0310-95a4-ce76da25c4cd