fixup! jobshop: read current date to convert due date in simulation clock time

dream/simulation/GUI/JobShop.py

@@ -42,7 +42,7 @@ class Simulation(ACO.Simulation):
 
     now = datetime.now()
     if data['general']['currentDate']:
-      now = strptime(data['general']['currentDate'], '%Y/%m/%d')
+      now = datetime.strptime(data['general']['currentDate'], '%Y/%m/%d')
 
     if 'wip_spreadsheet' in data:
       wip_dict = {}