add importMetadata

config.jsonc

@@ -55,6 +55,7 @@ examples (config.SITENAME.jsonc) that are part of this pan.do/ra distribution.
         "canEditUsers": {"admin": true},
         "canExportAnnotations": {"member": true, "staff": true, "admin": true},
         "canImportAnnotations": {"member": true, "staff": true, "admin": true},
+        "canImportItems": {"member": true, "staff": true, "admin": true},
         "canManageDocuments": {"member": true, "staff": true, "admin": true},
         "canManageEntities": {"member": true, "staff": true, "admin": true},
         "canManagePlacesAndEvents": {"member": true, "staff": true, "admin": true},
@@ -153,6 +154,20 @@ examples (config.SITENAME.jsonc) that are part of this pan.do/ra distribution.
         {"id": "embeds", "title": "Embeds"}
     ],
     /*
+    "importMetadata" defines what fields (as defined in "itemKeys") will get
+    populated with imported metadata. There is metadata for "title",
+    "description", "uploader", "date", "tags", "id", "url", and the value must
+    be a format string (like "{title} ({id})"). The type of the itemKeys must
+    be "string", ["string"], "text", "date" or "year". The last two only work
+    with "{date}".
+    */
+    "importMetadata": {
+        "date": "{date}",
+        "topic": "{tags}",
+        "summary": "{description}",
+        "title": "{title}"
+    },
+    /*
     "itemKeys" defines the metadata associated with each item. Required keys
     are "*", "id" and "title". Annotation layers can be referenced too, which
     makes them available in the find element. Adding a key with "annotations"