b942ba07e0
Refactored the function for scaling the size group volume fractions to better handle situations in which their sum drifts away from unity. Scaling is now turned on by default, and can be turned off in the solution dictionary for the population balance. Additional revision and renaming of *Polydisperse tutorials Patch contributed by Institute of Fluid Dynamics, Helmholtz-Zentrum Dresden - Rossendorf (HZDR)