Updated SQL Json support

ref-test/app/models/test.py

@@ -1,9 +1,9 @@
 from ..extensions import db
-from ..tools.forms import JsonEncodedDict
 from ..tools.logs import write
 
 from flask_login import current_user
 from sqlalchemy.exc import SQLAlchemyError
+from sqlalchemy_json import MutableJson
 
 from datetime import date, datetime
 import secrets
@@ -18,7 +18,7 @@ class Test(db.Model):
     time_limit = db.Column(db.Integer, nullable=True)
     creator_id = db.Column(db.String(36), db.ForeignKey('user.id'))
     dataset_id = db.Column(db.String(36), db.ForeignKey('dataset.id'))
-    adjustments = db.Column(JsonEncodedDict, nullable=True)
+    adjustments = db.Column(MutableJson, nullable=True)
     entries = db.relationship('Entry', backref='test')
 
     def __repr__(self):