[FIX] contract: Handle properly multi-company setups

If you have contracts in several companies, cron will create all of them, but
property fields will be populated with incorrect data as the taken company is
the main from the cron user (usually admin).

contract/__manifest__.py

@@ -9,7 +9,7 @@
 
 {
     'name': 'Recurring - Contracts Management',
-    'version': '12.0.5.1.3',
+    'version': '12.0.5.2.0',
     'category': 'Contract Management',
     'license': 'AGPL-3',
     'author': "OpenERP SA, "