[FIX] JS Error store_parsons_order (hedyorg#4193)

**Description**

Upon submitting the result for a parsons test, a JS Error occurs, level is supplied as an integer in the payload; the store_parsons_order route returns an HTTP 400 whenever the level is not an string instance. 

**Fixes hedyorg#4192**

**How to test**

Go to any level; go to parasons tab; submit a / any answer.

**Checklist**
  
- [x] Contains one of the PR categories in the name
- [x] Describes changes in the format above
- [x] Links to an existing issue or discussion 
- [x] Has a "How to test" section

app.py

@@ -1767,8 +1767,8 @@ def store_parsons_order():
     # Validations
     if not isinstance(body, dict):
         return 'body must be an object', 400
-    if not isinstance(body.get('level'), str):
-        return 'level must be a string', 400
+    if not isinstance(body.get('level'), int):
+        return 'level must be an integer', 400
     if not isinstance(body.get('exercise'), str):
         return 'exercise must be a string', 400
     if not isinstance(body.get('order'), list):

website/programs.py

@@ -182,8 +182,6 @@ def save_program(self, user):
                 if not body.get("force_save", True):
                     return jsonify({"parse_error": True, "message": gettext("save_parse_warning")})
 
-        print('Going into logic')
-
         program = self.logic.store_user_program(
             program_id=program_id,
             level=body['level'],