Set company to the grouping move

issue10415
review353521002
(grafted from 9ca8eb48bd783965ed3ac6fc57923d9282dcd3d6)

--HG--
branch : 6.0

move.py

@@ -2041,9 +2041,11 @@ class GroupLines(Wizard):
 
         if not date:
             date = Date.today()
-        period = Period.find(grouping['company'].id, date=date)
+        company = grouping['company']
+        period = Period.find(company.id, date=date)
 
         move = Move()
+        move.company = company
         move.date = date
         move.period = period
         move.journal = journal