getQuantity should return a float.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16258 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Event.py

@@ -90,5 +90,5 @@ class Event(EmailDocument, Movement):
       """
         Quantity is set automatically on Events.
       """
-      return 1 # Provide opportunity to script this
-
+      # Provide opportunity to script this
+      return 1.