Cleanup in the 'python' directory

[oysteijo]

The python directory contains code for comparing the python reference with keras in addition to a script for comparing the python reference the C implementation. This code is a bit of a mess. Code is repeated in the two scrips and the config dictionary is not properly used. etc. Basically, it just needs a cleanup.

[oysteijo]

Maybe the directory it self should be called reference and then the neural network implementation can be called neuralnet.py?

[oysteijo]

After I changed the neuralnet store format, The python implementation was not updated accordingly. Fix this first!

[oysteijo]

May we can extract the python implementation to a project on it's own? If we need to verify the C implementation, that can be done with keras.