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.

git-svn-id: https://develop.svn.wordpress.org/trunk@30573 602fd350-edb4-49c9-b593-d223f7449a82
Editor: add a pointer for the new DFW button. Remove the wp350_media and wp360_revisions pointers from the same screens. See #30458.

git-svn-id: https://develop.svn.wordpress.org/trunk@30574 602fd350-edb4-49c9-b593-d223f7449a82
Fix the PHPDoc example for _split_str_by_whitespace().
Props voldemortensen. Fixes #30504


git-svn-id: https://develop.svn.wordpress.org/trunk@30575 602fd350-edb4-49c9-b593-d223f7449a82
Type cast `$nonce` to string in `wp_verify_nonce()`.

props jesin.
fixes #29542.

git-svn-id: https://develop.svn.wordpress.org/trunk@30576 602fd350-edb4-49c9-b593-d223f7449a82
Remove the `wp_is_trusted_network()` function pending further discussion on terminology and behaviour.

See #30145


git-svn-id: https://develop.svn.wordpress.org/trunk@30577 602fd350-edb4-49c9-b593-d223f7449a82
Network Admin: Improve width of input fields on Add New Site and Edit Site screens.

props honeysilvas.
fixes #16383.

git-svn-id: https://develop.svn.wordpress.org/trunk@30578 602fd350-edb4-49c9-b593-d223f7449a82
Comments: Use proper HTTP response codes for validation errors.

props miqrogroove, solarissmoke, mackensen.
fixes #11286.

git-svn-id: https://develop.svn.wordpress.org/trunk@30579 602fd350-edb4-49c9-b593-d223f7449a82
Fix DocBlock formatting for `wp_generate_password()`.

Props stevegrunwell for the initial patch.
Fixes #30509.


git-svn-id: https://develop.svn.wordpress.org/trunk@30580 602fd350-edb4-49c9-b593-d223f7449a82
Remove unbounded check for "install.php" in `wp_not_installed()`.

The check is true for `wp-admin/plugin-install.php` and `wp-admin/theme-install.php` too. This will end in a redirect to `/wp-admin/upgrade.php` or a screen with a bunch of errors.
The `WP_INSTALLING` constant was added in WordPress 1.5.1 to `wp-admin/install.php` which makes the check for "install.php" redundant.

props joemcgill.
fixes #29694.

git-svn-id: https://develop.svn.wordpress.org/trunk@30581 602fd350-edb4-49c9-b593-d223f7449a82
Remove old DFW width adjustment help text.

fixes #30517

git-svn-id: https://develop.svn.wordpress.org/trunk@30582 602fd350-edb4-49c9-b593-d223f7449a82
Editor: fix warnings in class-wp-editor.php, see #30453.

git-svn-id: https://develop.svn.wordpress.org/trunk@30583 602fd350-edb4-49c9-b593-d223f7449a82
Remove unused CSS and JS from wp-mce-help.php, see #30517.

git-svn-id: https://develop.svn.wordpress.org/trunk@30584 602fd350-edb4-49c9-b593-d223f7449a82
Revert shared taxonomy term splitting for 4.1.

This is a revert of [30494], [30492], [30347], and [30334]. The latter
changeset was a revert of [30336], which was a revert of [30241].

Watch for Term Splitting, Version III in version 4.2, coming soon to a
WordPress trunk near you.

See #30335, #5809.

git-svn-id: https://develop.svn.wordpress.org/trunk@30585 602fd350-edb4-49c9-b593-d223f7449a82
Editor: limit scrolling triggered when TinyMCE is auto-resized to 100px. Prevents auto-scrolling on page load. Fixes #30515.

git-svn-id: https://develop.svn.wordpress.org/trunk@30586 602fd350-edb4-49c9-b593-d223f7449a82
WPDB: Remove the addition of `STRICT_ALL_TABLES`, added in [30400]. This proved to be incompatible with too many plugins, as well as being incompatible with MySQL 5.7.

See #21212.


git-svn-id: https://develop.svn.wordpress.org/trunk@30587 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: minor corrections to borders and post title colors in custom color schemes.

Props iamtakashi, fixes #30521.




git-svn-id: https://develop.svn.wordpress.org/trunk@30588 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: overflow hidden can hide focus outlines here so out it goes.

Props iamtakashi, fixes #30523.



git-svn-id: https://develop.svn.wordpress.org/trunk@30589 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: better highlights for tapped links in iOS Safari.

Props iamtakashi, fixes #30524.




git-svn-id: https://develop.svn.wordpress.org/trunk@30590 602fd350-edb4-49c9-b593-d223f7449a82
Better error message when the admin is ssl and non-ssl oEmbed previews are not available in the editor. Props Japh, fixes #30533.

git-svn-id: https://develop.svn.wordpress.org/trunk@30591 602fd350-edb4-49c9-b593-d223f7449a82
Revert [30032] so appropriate PHP warnings aren't masked.

Fixes #28743


git-svn-id: https://develop.svn.wordpress.org/trunk@30592 602fd350-edb4-49c9-b593-d223f7449a82