change value to TEXT to allow longer strings

backend/website/models.py

@@ -61,7 +61,7 @@ class Color(db.Model):
 class Setting(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     key = db.Column(db.String(50), unique=True)
-    value = db.Column(db.String(50), unique=False)
+    value = db.Column(db.Text, unique=False)
 
 
 class OAuth2Client(db.Model, OAuth2ClientMixin):