Updates for project Vocaluxe and language de (#699)

* Translate Output/Languages/en.xml in de

100% translated source file: 'Output/Languages/en.xml'
on 'de'.

* Translate en.xml in de

100% translated source file: 'en.xml'
on 'de'.

* Translate en.xml in de

100% translated source file: 'en.xml'
on 'de'.

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Co-authored-by: transifex-integration[bot] <43880903+transifex-integration[bot]@users.noreply.github.com>

Output/PartyModes/Challenge/Languages/de.xml

@@ -7,7 +7,7 @@
   <string name="TR_BUTTON_NEXT">Weiter</string>
   <string name="TR_BUTTON_BACK">Zurück</string>
   <string name="TR_BUTTON_START">Start</string>
-  <string name="TR_BUTTON_EXIT">Exit</string>
+  <string name="TR_BUTTON_EXIT">Beenden</string>
   <string name="TR_BUTTON_YES">Ja</string>
   <string name="TR_BUTTON_NO">Nein</string>
   <string name="TR_BUTTON_NEXT_ROUND">Nächste Runde</string>

Output/PartyModes/TicTacToe/Languages/de.xml

@@ -7,11 +7,11 @@
   <string name="TR_BUTTON_NEXT">Weiter</string>
   <string name="TR_BUTTON_BACK">Zurück</string>
   <string name="TR_BUTTON_START">Start</string>
-  <string name="TR_BUTTON_EXIT">Exit</string>
+  <string name="TR_BUTTON_EXIT">Beenden</string>
   <string name="TR_BUTTON_YES">Ja</string>
   <string name="TR_BUTTON_NO">Nein</string>
   <string name="TR_BUTTON_NEXT_ROUND">Starten</string>
-  <string name="TR_SONGS">Songs</string>
+  <string name="TR_SONGS">Lieder</string>
   <string name="TR_TEAM">Team</string>
   <string name="TR_SCREENCONFIG_TITLE">Tic-Tac-Toe: Einstellungen</string>
   <string name="TR_SCREENCONFIG_NUMPLAYERST1">Anzahl der Spieler in Team 1</string>