minor changes (dpi, age)
prepared to run parameter study script with different flags; error in
'mid_spec_fe_level' corrected
copyied file to allow supprt_flag (unused so far)
added 'w_max' as Trait; removed some if-clause in order to avoid error
message on setup
minor changes
minor comments added
renaming script for parameter study from 'bt_3pt_study' to 'pst_bt_3pt'
renaming modul to 'pst_bt_3pt'
rename modul 'st_study' to 'pst_st'
rename modul 'st_study' to 'pst_st'