Customizer: Don't hide controls the preview frame has no information about.

props kovshenin.
see #27993.
Built from https://develop.svn.wordpress.org/trunk@29329


git-svn-id: http://core.svn.wordpress.org/trunk@29109 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make sure phpinfo() is not disabled before calling it in apache_mod_loaded().

props rohan013, harmr.
fixes #26772.
Built from https://develop.svn.wordpress.org/trunk@29330


git-svn-id: http://core.svn.wordpress.org/trunk@29110 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Prevent key event handlers from firing when in input areas in the media modal, as people understandably want to type inside said inputs. props kovshenin. fixes #28704.

Built from https://develop.svn.wordpress.org/trunk@29331


git-svn-id: http://core.svn.wordpress.org/trunk@29111 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use node.nodeName instead of tagName for better consistency/compatibility, see #28704.
Built from https://develop.svn.wordpress.org/trunk@29332


git-svn-id: http://core.svn.wordpress.org/trunk@29112 1a063a9b-81f0-0310-95a4-ce76da25c4cd
wpLink:
- Fix adding a link on pressing Enter.
- Don't auto-focus the URL field after selecting a local link.
- Don't auto-focus the URL field when opening on touch devices. Toggle focus/blur on it to close the onscreen keyboard so the modal is positioned properly.
See #28897.
Built from https://develop.svn.wordpress.org/trunk@29333


git-svn-id: http://core.svn.wordpress.org/trunk@29113 1a063a9b-81f0-0310-95a4-ce76da25c4cd
PressThis: when the Text editor is the default, run the initial textarea content through pre_wpautop() to convert the paragraph tags. Fixes #29081.
Built from https://develop.svn.wordpress.org/trunk@29334


git-svn-id: http://core.svn.wordpress.org/trunk@29114 1a063a9b-81f0-0310-95a4-ce76da25c4cd
wpLink: add custom open and close events, props bradyvercher, fixes #28095.
Built from https://develop.svn.wordpress.org/trunk@29335


git-svn-id: http://core.svn.wordpress.org/trunk@29115 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor scrolling:
- Add a Screen Option to turn it on/off, and on()/off() methods from JS. Store the user preference.
- Fix delayed calls to resize() in the TinyMCE autoresize plugin.
See #28328.
Built from https://develop.svn.wordpress.org/trunk@29336


git-svn-id: http://core.svn.wordpress.org/trunk@29116 1a063a9b-81f0-0310-95a4-ce76da25c4cd