Restarts are now:
'''All atom folders must start with the same method:  
1) structures.in from previous run must exist in each atom folder
or
2) structures.in must be deleted from each atomfolder. Structure folders must exist from previous runs (including pure cases) in atom folders, which can be a mix of finished and unfinished structures.  
s from previous run must exist
or
3) if all the above are missing from all folders, each atom will start from scratch with iid structures'''