[Merge] ~nteodosio/software-properties:interim-releases into software-properties:ubuntu/master

[Nathan Teodosio]

Thanks for the catch, I fixed that and verified that in a LTS the Ubuntu Pro page now looks equal for origin/ubuntu/master and this proposed branch.
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https://code.launchpad.net/~nteodosio/software-properties/+git/software-properties/+merge/438549
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