MechanicalObject: cleaning reset(): 'force' must also be resetted, and even for mapped states. Note that solver-created vectors should be resetted in the solver's reset() function.
MechanicalObject: cleaning reset(): 'force' must also be resetted, and even for mapped states.
Note that solver-created vectors should be resetted in the solver's reset() function.

Former-commit-id: 762ef9208aa8ec0d5ab590ba999025f341d0443b
FabienPean/sofa,Anatoscope/sofa,FabienPean/sofa,hdeling/sofa,hdeling/sofa,FabienPean/sofa,hdeling/sofa,FabienPean/sofa,Anatoscope/sofa,FabienPean/sofa,Anatoscope/sofa,Anatoscope/sofa,hdeling/sofa,FabienPean/sofa,Anatoscope/sofa,hdeling/sofa,Anatoscope/sofa,FabienPean/sofa,FabienPean/sofa,FabienPean/sofa,hdeling/sofa,Anatoscope/sofa,hdeling/sofa,hdeling/sofa,Anatoscope/sofa,FabienPean/sofa,hdeling/sofa,hdeling/sofa,Anatoscope/sofa