Added quantity_sign to be used by MovementGroup

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@3332 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/Amount.py

@@ -91,6 +91,10 @@ class Amount:
       'acquisition_accessor_id'       : 'getQuantity',
       'acquisition_depends'           : None,
       'mode'        : 'w' },
+    { 'id'          : 'quantity_sign',
+      'description' : 'defines if the quantity is positive or negative',
+      'type'        : 'float',
+      'mode'        : 'w' },
     { 'id'          : 'efficiency',
       'description' : """The efficiency.""",
       'type'        : 'float',
@@ -117,6 +121,3 @@ class Amount:
                  # Acquired categories
                  'product_line', )
   
-  
-  
-  
\ No newline at end of file