Hotfix 1.3.14 - RR fully translated to German language

Let us announce that Rail Route is now fully translated to German language. Many thanks to our community!

UPDATE: Localizations (de: all + "in progress" flag removed; jp: all; fr: tutorials, ui; zh-Hans: tutorials, ui; zh-Hant: ui)

FIX: It was possible to create a loop ending in a switch (illegal situation) by deleting a signal in the loop (legit situation)