dil5: fix config file after change of frappy_psi/picontrol

+ fixes in frappy_psi/picontrol.py

frappy_psi/picontrol.py

@@ -125,7 +125,8 @@ class PImixin(HasOutputModule, Writable):
             self.activate_control()
 
 
-class PI(Writable):
+# quick fix by Marek:
+class PIobsolete(Writable):
     """temporary, but working version from Marek"""
     input = Attached(Readable, 'the input module')
     output = Attached(Writable, 'the output module')
@@ -181,7 +182,7 @@ class PI(Writable):
 # - tries to determine the output limits automatically
 # unchecked!
 
-class PIproposed(HasConvergence, PImixin):
+class PI(HasConvergence, PImixin):
     input_module = Attached(Readable, 'the input module')
 
     def read_value(self):