SA: sensitivityCalculation return partial results in case simulation failure

[dlefaudeux]

When doing sensitivityCalculation if a simulation fail, the function fails and doesn't return anything (even if most simulations worked).

It would be better to still return results for the simulations that worked (or at least say which parameter and parameterFactor failed), otherwise the user will have to try each parameter separately to figure it out. If results for simulations that worked are returned then the user could still plot the spiderplot and time profile (even if some points are missing).