Add basic Buefy support for merging 2 objects

i.e. special grid stuff, plus "merge" view

tailbone/grids/core.py

@@ -1116,6 +1116,11 @@ class Grid(object):
                     value = ""
                 row[name] = six.text_type(value)
 
+            # maybe add UUID for convenience
+            if 'uuid' not in self.columns:
+                if hasattr(rowobj, 'uuid'):
+                    row['uuid'] = rowobj.uuid
+
             # set action URL(s) for row, as needed
             self.set_action_urls(row, rowobj, i)