Don't show loading indicators when refreshing the system status

When I added this the dividers didn't render the loading indicators but I guess some CSS has changed since then. Now we render the loading indicators on hidden elements so they don't appear.

Signed-off-by: Yarden Shoham <git@yardenshoham.com>

templates/admin/dashboard.tmpl

@@ -76,7 +76,7 @@
 			{{ctx.Locale.Tr "admin.dashboard.system_status"}}
 		</h4>
 		{{/* TODO: make these stats work in multi-server deployments, likely needs per-server stats in DB */}}
-		<div hx-get="{{$.Link}}/system_status" hx-swap="morph:innerHTML" hx-trigger="every 5s" hx-indicator=".divider" class="ui attached table segment">
+		<div hx-get="{{$.Link}}/system_status" hx-swap="morph:innerHTML" hx-trigger="every 5s" hx-indicator=".tw-hidden" class="ui attached table segment">
 			{{template "admin/system_status" .}}
 		</div>
 	</div>