Removing references to System class. All info kept in Model class now
Removed references to System in simulation/Tf_loop
Removed references to system class in MC2004 recipe. Wrote simple constant T example.
Analysis scripts now use gromacs_sbm exclusively.
simulation/Tf_loop uses gromacs_sbm exclusively now
Preliminary testing update. dryrun works.
Lowered estimates for walltime. In future use calibration curve
Auto estimate Tf. Renamed T_min T_max to avoid confusion with folding temp Tf