do_OneSite only called for include_YN>1 plus other fixes

- do_OneSite only called for include_YN>1
- fixed assignment of experimental values if not all rows included
- fixed command to run SoilWat if filesin is a treatment
- fixed calculation of tree rooting profile if no default is given in
datafiles
- fixed calling SoilWat for use_janus
- added code to check and adjust transpiration regions after creation
of SoilWat run is complete