Benoît Blanc

@ponceta I have added code from deltas to data-model and `init_qwat.sh`

@ponceta I have renamed deltas to match v 1.4.0

Hi @ponceta sorry for the delay, I have missed notification. I pushed new commits to have tests succeeded. I think it is ready to test :smile:

> I am not sure for the custom function. Sylvain originally wrote the Python code, and I am not really familiar with the code. It was the right way to...

@ponceta I have rebased this branch on master, added deltas and added one test to update orientation by moving a node of a pipe.