Make sure all log events have portfolio and app ids (where applicable)

atst/domain/application_roles.py

@@ -14,7 +14,9 @@ class ApplicationRoles(object):
 
     @classmethod
     def create(cls, user, application, permission_set_names):
-        application_role = ApplicationRole(user=user, application_id=application.id)
+        application_role = ApplicationRole(
+            user=user, application_id=application.id, application=application
+        )
 
         application_role.permission_sets = ApplicationRoles._permission_sets_for_names(
             permission_set_names

atst/domain/audit_log.py

@@ -1,5 +1,3 @@
-from sqlalchemy import or_
-
 from atst.database import db
 from atst.domain.common import Query
 from atst.models.audit_event import AuditEvent