Add hints column in challenge model

hodor/models/challenges.py

@@ -7,11 +7,12 @@ from sqlalchemy import inspect
 class Challenges(db.Model):
     __tablename__= 'challenges'
 
-    #Data variables for each Challenges
-    chalid=db.Column(db.String(32), primary_key=True,unique=True,nullable=False)
+    #Data variables for each challenge
+    chall_id=db.Column(db.String(32), primary_key=True,unique=True,nullable=False)
     name = db.Column(db.String(32), nullable=False)
     points = db.Column(db.Integer, nullable=False)
     description = db.Column(db.String(2048), nullable=False)
+    hints=db.Column(db.String(512), nullable=False)
 
     @staticmethod
     def save(self):