Updating of mean of accepted simulations was not made after definition of new criterias.
All new simulations will be defined as locked until the user has unlocked a document for selection of ensambles of simulations. This is to prevent redefinition of acceptance that are made during multiruns using Bayesian calbrittion
Deleted bug in the estimated mean value of performance index for all simulations made within a multirun. This erroneous value may have caused problem when specifying new population of selected runs since it was used as default criteria to accept new populations.