RSS allow access via token (#310)

Allow access via a token
* New RSS URL
* Redirect the old RSS feed URL
* fix tests

changedetectionio/store.py

@@ -49,7 +49,7 @@ class ChangeDetectionStore:
                     # Custom notification content
                     'notification_title': None,
                     'notification_body': None,
-                    'notification_format': None,
+                    'notification_format': None
                 }
             }
         }
@@ -147,6 +147,12 @@ class ChangeDetectionStore:
             else:
                 self.__data['app_guid'] = str(uuid_builder.uuid4())
 
+        # Generate the URL access token for RSS feeds
+        if not 'rss_access_token' in self.__data['settings']['application']:
+            import secrets
+            secret = secrets.token_hex(16)
+            self.__data['settings']['application']['rss_access_token'] = secret
+
         self.needs_write = True
 
         # Finally start the thread that will manage periodic data saves to JSON