Cleaning up the repository

[mmkekic]

I suggest the following course of action:

• Make version release for the current state of master (previous to the last commit that is breaking Travis).

• Merge KrCalib2.0 at and make a minor change tag.

This way all the notebook by @jjgomezcadenas, @jahernando and @jmhaefner can still be used with the corresponding version checkout.
The next steps will be:

• add tests to automatic_script and merge it to master asap

• open a PR that cleans up the code, removing all unnecessary functions, making sure the automatic script tests still work

• open smaller PRs to add missing test, maybe some useful functions that were removed during the cleaning ... etc

If nobody complains I will start the process later today :)