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Derp!

Since the fix has to be applied from inside Tails, anybody can try it,
independently from their original operating system.

The experimental image is not a workaround as such since people
shouldn't only rely on the image for testing.

This reverts commit b949d038.

This reverts commit 072f7e96.

This reverts commit 34710f08.

This reverts commit 54ee9c03.

This reverts commit 70e55f1f.

This reverts commit f9dfc710.

This reverts commit ae94bc00.