4 things....

1) Added logic for creating default vs. custom surveys based upon
session variables created by Jimmy.
2) Determined that default (10 main questions) vs. custom different # of
main questions is essentially same logic, and made some changes
accordingly.
3) Changed names of some things to be more clear.
4) Fixed an oversight that was causing a bug in the
build_TimeMPL_IterativeSurvey logic for surveys that didn't have 10
questions!