improving get_config (#240)

CTFd/utils.py

@@ -361,6 +361,18 @@ def delete_file(filename):
 
 @cache.memoize()
 def get_config(key):
+    with app.app_context():
+        value = app.config.get(key)
+        if value:
+            if value and value.isdigit():
+                return int(value)
+            elif value and isinstance(value, six.string_types):
+                if value.lower() == 'true':
+                    return True
+                elif value.lower() == 'false':
+                    return False
+                else:
+                    return value
     config = Config.query.filter_by(key=key).first()
     if config and config.value:
         value = config.value