Modifying the PO file did not work for me but I don't really now what I am
doing so it is okay. Anyway I changed it back to only the win_conditions
textdomain in the function.
Your team Widelands Developers is subscribed to branch
Mailing list: https://launchpad.net/~widelands-dev
Post to : email@example.com
Unsubscribe : https://launchpad.net/~widelands-dev
More help : https://help.launchpad.net/ListHelp