moved all_columns list where appropriate - above code block that uses it

Author: Kully

plotly/grid_objs/grid_objs.py

@@ -163,12 +163,12 @@ def __init__(self, columns_or_json):
             # collect and sort all orders in case orders do not start
             # at zero or there are jump discontinuities between them
             all_orders = []
-            ordered_columns = []
             for column_name in columns_or_json['cols'].keys():
                 all_orders.append(columns_or_json['cols'][column_name]['order'])
             all_orders.sort()
 
             # put columns in order in a list
+            ordered_columns = []
             for order in all_orders:
                 for column_name in columns_or_json['cols'].keys():
                     if columns_or_json['cols'][column_name]['order'] == order: