Cleaning script
Moving begin/end dates datas extraction from Python to C++ files

* Added function to Utilities for string fill
* Moving python type check from Python to C++ in 'setPeriodBeginDate'
Modifying all type parameter in wrapper.cpp to boost python object, and added type check method in c++ side
Updating docstring in c++ wrapper
Updating docstring in c++ wrapper
Breaking loop for test creation in cmake file into custom test for each test script