Basic UI-Implementation finished.
More UI-Implementation.
Program starts now.
Code cleanup.
Merge branch 'master' of https://github.com/mts21/WetterKarte
Merge branch 'master' of https://github.com/mts21/WetterKarte
Isolinien draw engine implemented.
Merge branch 'master' of https://github.com/mts21/WetterKarte
Bugfix.