Send "live" event only if past events requested

This fixes a bug where the live events are recorded in the events log.

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

supervisor/supervisor.go

@@ -169,12 +169,12 @@ func (s *Supervisor) Events(from time.Time) chan Event {
 				c <- e
 			}
 		}
-	}
 		// Notify the client that from now on it's live events
 		c <- Event{
 			Type:      "live",
 			Timestamp: time.Now(),
 		}
+	}
 	return c
 }