Use sqlalchemy events to emit jsonpatches to the client.

app/corpora/events.py

@@ -4,7 +4,7 @@ from flask_login import current_user
 from socket import gaierror
 from .. import db, socketio
 from ..decorators import socketio_login_required
-from ..events import socketio_sessions
+from ..socketio_events import socketio_sessions
 from ..models import Corpus
 import cqi
 import math