Editor scrolling:

* Make sure the background color for tools is only applied to the main editor.
* Fix toolbar width for smaller screens.
* Ensure toolbar doesn't end up in a weird place when scrolling down too fast.
* Avoid JS errors for post types that don't support the editor.

props avryl. see #28328.

Built from https://develop.svn.wordpress.org/trunk@29075


git-svn-id: http://core.svn.wordpress.org/trunk@28861 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/css/editor-rtl.css

@@ -756,7 +756,7 @@ i.mce-i-hr:before {
 	position: relative;
 }
 
-.wp-editor-tools {
+#wp-content-editor-tools {
 	background-color: #f1f1f1;
 	padding-top: 20px;
 	position: relative;