The changes from D5290 broke the script to credit translators, as the
lines with the translators might now include additional information,
like the years of contribution, after the usernames, that would've
been included by `creditTranslators.py` as well.
This commit also slighly hardens the removal of deleted users to from
the credited translators to reduce the likelihood to remove still
existing users.
Patch by: @Dunedan
Accepted by: @Stan
Differential Revision: https://code.wildfiregames.com/D5298
This was SVN commit r28142.