Replace wrong usage of False by None

issue2512

dashboard.py

@@ -12,7 +12,7 @@ class DashboardAction(ModelSQL, ModelView):
     sequence = fields.Integer('Sequence', required=True)
     act_window = fields.Many2One('ir.action.act_window', 'Action',
             required=True, ondelete='CASCADE', domain=[
-                ('res_model', '!=', False),
+                ('res_model', '!=', None),
                 ('res_model', '!=', ''),
             ])
 

ir.py

@@ -22,7 +22,7 @@ class View(Model):
         model_data_ids = model_data_obj.search([
             ('fs_id', '=', 'view_dashboard'),
             ('module', '=', 'dashboard'),
-            ('inherit', '=', False),
+            ('inherit', '=', None),
             ], limit=1)
         if not model_data_ids:
             return 0