Scenario for Single and Inter DataNodeParameter

[dcolleoni]

1. Define a format for DataNodeParameter importer
2. Trigger recalculation of dependent partition:
   BE parameter => all scenarios (same period,Rn)
   Scenario => compute all scenario which depends on Parameters (how to deal with new scenario created by the client?)

[amuolo]

This ticket has been solved by the following PR: #229