user, password and url for dc adapter

[LKuemmel]

openWB/openwb-ui-settings#897

[seaspotter]

#3118 Entweder hier oder dort muss dann der Datastore um eins hochgezählt werden, je nachdem was zuerst gemergt wird.

[benderl]

Vor dem Upgrade sind die Bedingungen immer erfüllt.

Suggested change

	if config["configuration"].get("user") is None:
	config["configuration"]["user"] = None
	if config["configuration"].get("password") is None:
	config["configuration"]["password"] = None
	if config["configuration"].get("ip_address") is not None:
	ip_address = config["configuration"].pop("ip_address")
	config["configuration"]["url"] = f'http://{ip_address}/connect.php'
	config["configuration"]["user"] = None
	config["configuration"]["password"] = None
	ip_address = config["configuration"].pop("ip_address")
	config["configuration"]["url"] = f'http://{ip_address}/connect.php'