ImageLoader: include image from wikipedia entry only, if no wikidata tag set

src/ImageLoader.js

@@ -49,20 +49,20 @@ ImageLoader.prototype.parseObject = function (data) {
     }
   }
 
-  if (data.object.tags.wikipedia) {
-    this.sources.push({
-      type: 'wikipedia',
-      value: data.object.tags.wikipedia
-    })
-  }
-
   if (data.object.tags.wikidata) {
     this.sources.push({
       type: 'wikidata',
       value: data.object.tags.wikidata
     })
+  } else if (data.object.tags.wikipedia) {
+    // only include wikipedia if no wikidata entry exists
+    this.sources.push({
+      type: 'wikipedia',
+      value: data.object.tags.wikipedia
+    })
   }
 
+
   if (data.object.tags.wikimedia_commons) {
     this.sources.push({
       type: 'wikimedia_commons',