Completly Rewrite Keystorage

Now the config library from pypi is used. Install via 'pip install
config'. Much less code now to manage keys.
Create simple Makefile to run and cleanup for testing purposes
Update Readme

install config package
remove heavy developement for keyfiles
future tasks updated
remove json import as it is not required any more
add debug messages and error handling
add todo to handle case when appkey is set but wrong