feat(app): move /desk to /app

payments/templates/pages/gcalendar-success.html

@@ -9,7 +9,7 @@
 			{{ _("Success") }}</span>
 	</div>
 	<p>{{ _("Your connection request to Google Calendar was successfully accepted") }}</p>
-	<div><a href='{{ "/desk" }}' class='btn btn-primary btn-sm'>
+	<div><a href='{{ "/app" }}' class='btn btn-primary btn-sm'>
 		{{ _("Back to Desk") }}</a></div>
 </div>
 <style>