Bundled Themes: bump version numbers to coordinate with 4.1 release.

Merges [30967] to the 4.1 branch.

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Update theme POT files in the 4.1 branch.

Built from https://develop.svn.wordpress.org/branches/4.1@30970


git-svn-id: http://core.svn.wordpress.org/branches/4.1@30957 1a063a9b-81f0-0310-95a4-ce76da25c4cd