* design counter on connection board
* display time of last update and add reload button
* chance `Updated` field to a real button
* Provide counter values for the dashboard
* change background color ot the top branch
- use dark-grey instead of black to reduce the contrast
* change color of counter tiles
* test proxy connection counter handling
* prepare conn-table and notes list building
* remove obsolete menue points
* store client mode for dashboard
* store inverters serial number for the dashboard
* store inverters serial number
* build connection table for dashboard
* add connection table to dashboard
* fix responsiveness of the tiles
* adapt unit tests
* remove test fake code
* increase test coverage, remove obsolete if statement
* add optional java script to fetch data regullary
* change file extension to `html.j2` for templates
* fix route for fetch data
- for running in iframes (e.g. HA ingress) we must
use relative path in the URLs
* increase test coverage
* remove unused statements
* configure path to web files for Quart
* copy web-file into the add-on container
* add test template and stylesheet
* add w3.css dashboard
* fix unit test for test dashboard
* add Roboto font
* add awesome web font
* add all favicon formats
* load fonts locally
* adapt unit tests
* add all font and favicons to add-on
* fix sonarqube warnings
* add unit tests for all favicons
