Move the responsive padding for html.wp-toolbar to wp-admin.css since it affects the page content, not the toolbar.

git-svn-id: https://develop.svn.wordpress.org/trunk@26177 602fd350-edb4-49c9-b593-d223f7449a82
In multisite, set storage space labels to nowrap to prevent unnecessary line breaks. Fixes #25919, props SergeyBiryukov.

git-svn-id: https://develop.svn.wordpress.org/trunk@26178 602fd350-edb4-49c9-b593-d223f7449a82