erp5_production_planning: add period parameter

bt5/erp5_production_planning/SkinTemplateItem/portal_skins/erp5_production_planning/ProductionPlanning_getCellRange.py

@@ -7,8 +7,8 @@ if not start_date:
   start_date = context.getStartDate()
 if not stop_date:
   stop_date = context.getStopDate()
-
-period = context.getProductionPlanningPeriod()
+if not period:
+  period = context.getProductionPlanningPeriod()
 
 date_dict = {
  'monday': 1,

bt5/erp5_production_planning/SkinTemplateItem/portal_skins/erp5_production_planning/ProductionPlanning_getCellRange.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>start_date = None, stop_date=None, matrixbox=True, base_id=\'cell\'</string> </value>
+            <value> <string>start_date = None, stop_date=None, matrixbox=True, base_id=\'cell\', period=None</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>