Username support.

src/snek/service/chat.py

@@ -24,6 +24,7 @@ class ChatService(BaseService):
             channel_uid=channel_uid,
             created_at=channel_message["created_at"], 
             updated_at=None,
+            username=user['username'],
             uid=channel_message['uid'],
             user_nick=user['nick']
         ))

src/snek/view/rpc.py

@@ -74,7 +74,8 @@ class RPCView(BaseView):
                     user_nick=user['nick'],
                     message=message["message"],
                     created_at=message["created_at"],
-                    html=message['html'] 
+                    html=message['html'],
+                    username=user['username'] 
                 ))
             return messages