[Tails-dev] Wrong translation imported for perl5lib

Commit aba712d6156 in Tails main repo "devel" branch can't be right.
It is checking out "tails-iuk_completed" for perl5lib.

It seems the IUK translation actually was errorneously commited to
perl5lib repo too.

Just notifying you. I will be busy the next few days so I cannot fix it.