Reformat files according to PEP8

.gitignore

@@ -1,3 +1,4 @@
+.idea/
 
 *.py[co]
 *.DS_*

app/__init__.py

@@ -8,13 +8,16 @@ app.config.from_object('config')
 app.config.from_pyfile('config.py')
 db = SQLAlchemy(app)
 
+
 def on_stop():
     print('Application stopping')
     tear_down_mqtt()
 
+
 setup_mqtt(app)
 atexit.register(on_stop)
 
+
 @app.route("/")
 def hello():
     return "Hello World!"

app/mod_devices/__init__.py

@@ -2,30 +2,36 @@ from flask_mqtt import Mqtt
 
 mqtt = Mqtt()
 
+
 def setup_mqtt(app):
     mqtt.init_app(app)
     mqtt.client.on_message = handle_mqtt_message
     mqtt.client.on_subscribe = handle_subscribe
     print('MQTT client initialized')
 
+
 def tear_down_mqtt():
     mqtt.unsubscribe_all()
     if hasattr(mqtt, 'client') and mqtt.client is not None:
         mqtt.client.disconnect()
     print('MQTT client destroyed')
 
+
 @mqtt.on_connect()
 def handle_connect(client, userdata, flags, rc):
     print('MQTT client connected')
     mqtt.subscribe('topic/state')
 
+
 @mqtt.on_disconnect()
 def handle_disconnect():
     print('MQTT client disconnected')
 
+
 def handle_subscribe(client, userdata, mid, granted_qos):
     print('MQTT client subscribed')
 
+
 def handle_mqtt_message(client, userdata, message):
     data = dict(
         topic=message.topic,