Updating Slicer to integrate the changes of SEM
This pull request is following one made on Slicer Execution Model: https://github.com/Slicer/SlicerExecutionModel/pull/91
It is doing 3 distinct things:
- Updating the SEM's version used in Slicer
- Updating Slicer's code in order to use the newly created functions in SEM instead of the deprecated ones
- Updating and depreciating one function of Slicer in order to have a more explicit name (GetParameterValue instead of GetParameterDefault)