[Tails-l10n] Include languages with 0 reviewed strings

It seems danish translation is not included in Tails because of a new
rule that 1 string have to be reviewed in a certain ressource on Transifex.

I would like this rule to be removed so languages will be included in
Tails regardless of there being 1 reviewed string or 0 reviewed strings
for that langauge on Transifex.