Fix openweather forecast in new weather module, fetch daily data

[fwitte]

See #1504

Example

{
	module: "weather",
	position: "top_right",
	header: "Wetter",
	config: {
		type: "current",
		degreeLabel: true,
		location: "Oldenburg",
		locationID: "2857458",
		apiKey: "myapiKey"
	}
},
{
	module: "weather",
	position: "top_right",
	header: "Vorhersage",
	config: {
		type: "forecast",
		degreeLabel: true,
		weatherEndpoint: "/forecast",
		location: "Oldenburg",
		locationID: "2857458",
		apiKey: "myapiKey"
	}
},

looks like this now:

Note that for the forecast to work with a free API-subscription from openweathermap, you must provide weatherEndpoint: "/forecast"! weatherEndpoint: "/forecast/daily" returns error 401, as it is used for the 16-day forecast and requires the Startup-subscription at minimum!

[vincep5]

I use openweathermap (the free version) and have access to forecast/daily. I must be grandfathered in. In any case, if the project wants to support both /forecast/daily and /forecast, then these commits will not work with /forecast/daily. It does not have forecast.rain["3h"]

[fewieden]

As mentioned in my initial pull request #1488 (comment) there was currently no support for newer api keys in the forecast.

This mr broke now the support for the old api keys.

[fwitte]

Hi @fewieden,
I am sorry, I did not see that. Do you happen to know, if a different API key (new/old) yields different .json files for the same query? Are the data generated from .../data/forecast?... always the same no matter which key you supply? Unfortunately I can not test this, as I have the new key only.
If the formatting depends on the key, do you know how to identify the difference in the keys?
I am happy to adjust the code to work with both variants.
Thank you and have a nice weekend!