Comments, proper utf-8 encoding and pep8 clean

- just some simple fixings to make py2 compat work

whats-open/api/models.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
 """
 api/models.py
 
@@ -134,7 +136,9 @@ class Facility(TimeStampedModel):
                                                                          message='The link is not a valid tapingo link. Example: https://www.tapingo.com/order/restaurant/starbucks-gmu-johnson/',
                                                                          code='invalid_tapingo_url')])
 
-    phone_number = models.CharField(blank=True,max_length=18, validators=[RegexValidator(regex='^\(?([0-9]{3})\)?[-.●]?([0-9]{3})[-.●]?([0-9]{4})$',
+    # Phone number for a location if provided. Accept both ###-###-#### or
+    # without dashes
+    phone_number = models.CharField(blank=True, max_length=18, validators=[RegexValidator(regex='^\(?([0-9]{3})\)?[-.●]?([0-9]{3})[-.●]?([0-9]{4})$',
                                                                            message='Invalid phone number',
                                                                            code='invalid_phone_number')])