Update of the API

Hello Ruediger,

the Norwegians have updated their API and since about two weeks the old
version 1.8 is not accessible anymore. I hope I covered all the changes. At least
for me, it works again.

Best regards and thank you for the code,
Tim

[1] http://api.met.no/weatherapi/weathericon/1.1/documentation
[2] http://api.met.no/weatherapi/locationforecast/1.9/documentation#version_1_9___2014_05_20