Adding in the delete api and the delete and create UI.

data/model/message.py

@@ -11,3 +11,9 @@ def create(messages):
   for message in messages:
     inserted.append(Messages.create(content=message['content']))
   return inserted
+
+def delete_message(uuids):
+  """Delete message from the database"""
+  if not uuids:
+    return
+  Messages.delete().where(Messages.uuid << uuids).execute()