Revert to the most recent commit with a link to Mozilla's campaign tool.

We need to do some more work afterwards, such as re-adding the French
translation.

Revert "Update footer.html"

This reverts commit 9448cc2d.
2 jobs for develop in 1 second (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #1670
dev.savethememe.net
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passed #1669
dev.savethememe.net
job 2

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