Why:
* OpenWeather discontinued the FreePlan for FORECAST which now generates an API-key error as forecast is implicitly part of binding.
This Fix will remove the FORECAST call and option by simply returning nulll for the FORECASY url.

This change addresses the need by:
* return null in the FORECAST call

Signed-off-by: PtrO <[email protected]>

… paid key) is only queried if using apikey2 in weather.config.

Note: apikey2 is also forcily made "absent" when specified als apikey2=null (exact string).
This as solely removing the apikey2 from the weather.cfg file will not remove the value from cached settings.

To summarize:
if one has obtained a Forecast validated key from OpenWeather, specify this key in config apikey2=<key-value>
Incase one has only the Freeplan, do not specify apikey2 or code it als apikey2=null, to skip forecasts.

Signed-off-by: PtrO <[email protected]>