Give User Modify Portal Content permission

In two tests, user as the author of the document tries to
modify it by giving it a title but he's not able to do so
because he does not have the ModifyPortalContent permission.

product/ERP5/tests/testTemplate.py

@@ -69,6 +69,7 @@ class TestTemplate(ERP5TypeTestCase):
     self.portal.foo_module.manage_role(role_to_manage='Author',
                                 permissions=[Permissions.AddPortalContent,
                                              Permissions.CopyOrMove,
+					     Permissions.ModifyPortalContent,
                                              ])
 
   def test_Template(self):