Twenty Fifteen: clean up sprintf from template tags and use the correct escaping for twentyfifteen template tags.

Props aprea, obenland, fixes #30319



git-svn-id: https://develop.svn.wordpress.org/trunk@30312 602fd350-edb4-49c9-b593-d223f7449a82
Use a brighter blue against dark backgrounds in the admin menu and toolbar.

Not only does this pass contrast guidelines, but it also visually appears closer to the original highlight blue used against light backgrounds.

props melchoyce. fixes #30323.


git-svn-id: https://develop.svn.wordpress.org/trunk@30313 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: adding context to page links for screenreaders.

Props afercia, fixes #30174.



git-svn-id: https://develop.svn.wordpress.org/trunk@30314 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: since color schemes can be customized let's call them base color schemes instead of just color schemes.

Props celloexpressions, iandstewart, fixes #30316



git-svn-id: https://develop.svn.wordpress.org/trunk@30315 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: adding context to pagination links for screenreaders.

Props afercia, iamtakashi, fixes #30152



git-svn-id: https://develop.svn.wordpress.org/trunk@30316 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: improve appearance of page links when there are tons of pages to link to

Props iamtakashi, fixes #30301



git-svn-id: https://develop.svn.wordpress.org/trunk@30317 602fd350-edb4-49c9-b593-d223f7449a82
TinyMCE: enhance the inline toolbar for images:
- Add alignment (left, center, right, none) buttons.
- Position the menu above the image when possible, except on iOS.
- Fix selecting images on iOS.
First run, part props avryl. See #30147.

git-svn-id: https://develop.svn.wordpress.org/trunk@30318 602fd350-edb4-49c9-b593-d223f7449a82
Fix typo in translatable string, see #30147.


git-svn-id: https://develop.svn.wordpress.org/trunk@30319 602fd350-edb4-49c9-b593-d223f7449a82
Manually delete fixture in `test_mysqli_flush_sync()`.

This test creates a dummy post and subsequently runs a query containing
`DROP PROCEDURE`. This latter query implies a `COMMIT`, which means that the
post is not cleaned up for later tests. Manually deleting the post with
`wp_delete_post()` solves this problem.

Fixes #28155.

git-svn-id: https://develop.svn.wordpress.org/trunk@30320 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: reduce the margins on the editor body in esitor-style.css. Fixes #30331.

git-svn-id: https://develop.svn.wordpress.org/trunk@30321 602fd350-edb4-49c9-b593-d223f7449a82
Introduce `$post_type` param for `count_user_posts()`.

Props Caspie, engelen, DrewAPicture.
Fixes #21364.

git-svn-id: https://develop.svn.wordpress.org/trunk@30322 602fd350-edb4-49c9-b593-d223f7449a82
Pass query object to 'the_post' filter.

Props tlovett1.
Fixes #30327.

git-svn-id: https://develop.svn.wordpress.org/trunk@30323 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: unfix the sidebar if we have a menu with submenus as there is a chance visitors might not be able to scroll down to see submenus in some situations.

Props mattwiebe, fixes #30208.



git-svn-id: https://develop.svn.wordpress.org/trunk@30324 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: cleaning up JS introduced in r30305 that doesn't pass jshint.

Props boonebgorges, fixes #29988.



git-svn-id: https://develop.svn.wordpress.org/trunk@30325 602fd350-edb4-49c9-b593-d223f7449a82
Customizer: Prevent double-encoding in `WP_Customize_Control`.

Control's label and description may include HTML.

fixes #29572.

git-svn-id: https://develop.svn.wordpress.org/trunk@30326 602fd350-edb4-49c9-b593-d223f7449a82
Improve keyboard accessibility on Custom Header and Custom Background screen.

props florianziegler.
fixes #29289.

git-svn-id: https://develop.svn.wordpress.org/trunk@30327 602fd350-edb4-49c9-b593-d223f7449a82
Correct `@since` tag in `count_user_posts()` docs.

Props pavelevap, DrewAPicture.
See #21364.

git-svn-id: https://develop.svn.wordpress.org/trunk@30328 602fd350-edb4-49c9-b593-d223f7449a82
Customizer: Improve ability to filter active state for widget area Customizer sections.

* Mark panels, sections, controls as active if preview explicitly indicates.
* Introduce `WP_Customize_Sidebar_Section` PHP class, and `SidebarSection` JS class.
* Move logic for determining whether a sidebar section is active from the `SidebarControl` to `SidebarSection`.

props westonruter.
fixes #30235.

git-svn-id: https://develop.svn.wordpress.org/trunk@30329 602fd350-edb4-49c9-b593-d223f7449a82
Color Picker: Allow to override `mode` and `width` values for Iris via wpColorPicker options.

props jtsternberg.
fixes #30182.

git-svn-id: https://develop.svn.wordpress.org/trunk@30330 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: Add a transparent border to a link in the footer to avoid jumpiness on hover.

props iamtakashi.
fixes #30332.

git-svn-id: https://develop.svn.wordpress.org/trunk@30331 602fd350-edb4-49c9-b593-d223f7449a82