Add new entry types to selection in musdb/object_addendum

backend/de/object_addendum.json

@@ -96,16 +96,24 @@
         "Umgangssprache",
         "Dialekt"
     ],
-    "zugangsart": [
-        "",
-        "Schenkung",
-        "Kauf",
-        "Grabung",
-        "Notbergung",
-        "Erbschaft",
-        "Stiftung",
-        "Enteignung",
-        "Ursprungsbestand",
-        "Leihgabe"
-    ]
+    "zugangsart": {
+        "0": "",
+        "1": "Schenkung",
+        "2": "Kauf",
+        "3": "Grabung",
+        "4": "Notbergung",
+        "5": "Erbschaft",
+        "6": "Stiftung",
+        "7": "Enteignung",
+        "8": "Ursprungsbestand",
+        "9": "Leihgabe",
+        "10": "Tausch",
+        "11": "Eigenproduktion",
+        "12": "Material Strain (T\u00f6rzsanyag)",
+        "13": "Nachlass",
+        "14": "Vorlass",
+        "15": "Fund",
+        "98": "Ungekl\u00e4rt",
+        "99": "Anderer rechtm\u00e4\u00dfiger Zugang"
+    }
 }