S allius/issue393 (#403)

* display proxy version on dashboard

* add MQTT page

* styles adjusted on the different pages

- use same colors
- add bordered shadow to all cards and tables

* fix unit tests

* migrate the conn table to a general table

- rename the template file
- get headline from table description

* remove footer from index page

* make version string translateable

* cleanup

* remove stripped table rows

* add mqtt info table

* translate mqtt page

* don't fetch notes list for the log-page

* fix Mqtt init call for unit tests

* add mqtt-fetch test

* check received counter in unit test

app/tests/test_mqtt.py

@@ -140,6 +140,7 @@ async def test_ha_reconnect(config_mqtt_conn):
         assert on_connect.is_set()
 
     finally:
+        assert m.received == 2
         await m.close()
 
 @pytest.mark.asyncio