fix multiple identical uniprotids in molart menu

frontend-js/src/main/js/map/AbstractCustomMap.js

@@ -265,7 +265,10 @@ function activateMolArtLink(coordinates, map) {
     for (var i = 0; i < element.references.length; i++) {
       var ref = element.references[i];
       if (ref.constructor.name === 'Annotation' && ref.getType() === 'UNIPROT') {
-        uniprotIds.push(ref.getResource());
+        var uniprotId = ref.getResource()
+        if (uniprotIds.indexOf(uniprotId) < 0) {
+          uniprotIds.push(ref.getResource());
+        }
       }
     }
     if (uniprotIds.length > 0) map.getTopMap().getContextMenu().getMolArt().activateInContextMenu(uniprotIds);