Fix lint errors

res_partner_company_messages/__init__.py

@@ -1 +1,2 @@
-import models
+# -*- coding: utf-8 -*-
+from . import models

res_partner_company_messages/__openerp__.py

@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 {
     'name': "Aggregate messages from company's contacts",
     'version': '1.0.0',

res_partner_company_messages/models.py

@@ -1,4 +1,7 @@
-from openerp import api, models, fields, SUPERUSER_ID
+# -*- coding: utf-8 -*-
+from openerp import api
+from openerp import models
+
 
 class mail_message(models.Model):
     _inherit = 'mail.message'