Fix translations

assets/themes/postboxes/postboxes.json

@@ -10,7 +10,8 @@
     "en": "On this map you can find and add data of post offices and post boxes. You can use this map to find where you can mail your next postcard! :)<br/>Spotted an error or is a post box missing? You can edit this map with a free OpenStreetMap account. "
   },
   "language": [
-    "en"
+    "en",
+    "de"
   ],
   "maintainer": "",
   "icon": "./assets/themes/postboxes/postbox.svg",
@@ -96,7 +97,8 @@
         }
       },
       "description": {
-        "en": "A layer showing post offices."
+        "en": "A layer showing post offices.",
+        "de": "Eine Ebene mit Postämtern."
       },
       "tagRenderings": [
         "images",
@@ -119,7 +121,8 @@
             {
               "if": "opening_hours=24/7",
               "then": {
-                "en": "24/7 opened (including holidays)"
+                "en": "24/7 opened (including holidays)",
+                "de": "durchgehend geöffnet (auch an Feiertagen)"
               }
             }
           ],