Fix config timestamps

created_at represents the time when the configuration has been persisted to disk.
loaded_at represents the time when the configuration has actually been used.

If created_at is larger than loaded_at, then the Core needs a reload in order
to apply the latest configuration.

if created_at is lower than laoded_at, then the Core applied the latest
configuration.

The value of updated_at is irrelevant and shouldn't be used.

app/api/api.go

@@ -257,6 +257,8 @@ func (a *api) Reload() error {
 		return fmt.Errorf("not all variables are set or valid")
 	}
 
+	cfg.LoadedAt = time.Now()
+
 	store.SetActive(cfg)
 
 	a.config.store = store