breakTheOldOne as constraint and parenthesis drop

breakTheOldOne  is not a global parameters anymore, but is a behavioral
constraint.
(T1-P1) are now turned into T1-P1 alone because parenthesis was useless
in this case
Great Improvements

- A general function (generalSequentialSolver, which calls step makers
according to the list of moves planned (Inter, Schema, solve)
- We can create csv dataset
add Multiple simulations
change in scantree and bug fix
new file : paths.py

new package of classes dedicated to solving process and paths
Problem2 and some changes

- Interpretations are now in good order in the csv
- setInitialValues => possibility to only load the init dic instead
replacing values (useful in cas of cloned problesm, where values are
already replaced, but the init dic is not present)
solve some problems

- Solver(upD) did not init the constraints !
- Viande instead of Poisson in the alternative representations
- Delete Int+Solve