Remove some unnecessary empty space in the media library grid view. props adamsilverstein. see #24716.

Built from https://develop.svn.wordpress.org/trunk@29017


git-svn-id: http://core.svn.wordpress.org/trunk@28805 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Language on install: Docs and naming cleanups. see #28577.

Built from https://develop.svn.wordpress.org/trunk@29018


git-svn-id: http://core.svn.wordpress.org/trunk@28806 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView:
- Add loadingPlaceholder() that returns some html to use as placeholder while the view is loading. Includes a subtle CSS based loading animation.
- Fix setContent(), it should empty the element before appending the new node.
- Change getHtml() to always return a string.
Fixes #28761.
Built from https://develop.svn.wordpress.org/trunk@29019


git-svn-id: http://core.svn.wordpress.org/trunk@28807 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Focus and blur styling (via JS) for the install screen language selector. Props jorbin. See #28577
Built from https://develop.svn.wordpress.org/trunk@29020


git-svn-id: http://core.svn.wordpress.org/trunk@28808 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Narrower layout and loading spinner for the install screen language selector. See #28577
Built from https://develop.svn.wordpress.org/trunk@29021


git-svn-id: http://core.svn.wordpress.org/trunk@28809 1a063a9b-81f0-0310-95a4-ce76da25c4cd