Hard-coded paths in code

[mlangguth89]

There are several points in the code where paths are hard-coded and paths defined in config.py remain unused. The usage of relative paths for the data, result and model-directory furthermore induces a constraint on the current working directory, i.e. from where the runscripts are executed.

Examples for hard-coded paths:

• ./atmorep/datasets/normalizer_local.py, l.27
• ./atmorep/core/evaluator.py, l.93
• ./atmorep/applications/downscaling_trainer.py, l.284 (branch: lessig_dev)

This issue is also related to #10.

[clessig]

Fixed.

@iluise : can you please fix it in the normalizer code when you are re-working it.