Aggregate old plugins under the "dummy" core plugin

Created by: stefanoborini

We move the old plugins in the single "dummy" plugin, so we have only one.

force_bdss/mco/parameters/core_mco_parameters.py

@@ -10,8 +10,8 @@ class RangedMCOParameter(BaseMCOParameter):
     """Expresses a MCO parameter that has a range between two floating
     point values."""
     initial_value = Float()
-    upper_bound = Float()
     lower_bound = Float()
+    upper_bound = Float(1)
 
 
 class RangedMCOParameterFactory(BaseMCOParameterFactory):