Revert [28840]; wp_localize_script() must be called on a registered handle.

see #24724.

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Media: Ensure media-views is enqueued and registered before localizing.

fixes #24724.

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git-svn-id: http://core.svn.wordpress.org/trunk@29453 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin install: Better styling to accommodate plugin icons.

fixes #29466.

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git-svn-id: http://core.svn.wordpress.org/trunk@29454 1a063a9b-81f0-0310-95a4-ce76da25c4cd