core: proper action for Alarm's active sense

Introduce an action script which redirects to the alarm, so that
"something happen" and user can see that the method was invoked. This
also makes it possible to use this action in selenium tests
4 jobs for fix/multiple-fixes in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner2

01:44:19

failed ERP5.UnitTest-TestRunner2

03:01:10

passed ERP5.CodingStyleTest-TestRunner2

00:43:26

failed ERP5.UnitTest-TestRunner2

01:07:50