Merge pull request #565 from xchem/fix_second_upload_tags

Fixed tag creation process for multiple uploads

viewer/target_loader.py

@@ -1875,7 +1875,9 @@ def _tag_observations(self, tag, prefix, category, so_list):
             so_group.save()
 
         try:
-            so_tag = SiteObservationTag.objects.get(upload_name=tag, target=self.target)
+            so_tag = SiteObservationTag.objects.get(
+                upload_name=f"{prefix} - {tag}", target=self.target
+            )
             # Tag already exists
             # Apart from the new mol_group and molecules, we shouldn't be
             # changing anything.