js: Don't show running status on buttons pulled to right

This prevents incorrect animation for running status on first wizard steps.

Tests:

- In the first boot wizard, network topology step, click next and notice that
the running status does not appear next to 'skip wizard' link.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: Joseph Nuthalapati <njoseph@riseup.net>

static/themes/default/js/main.js

@@ -52,6 +52,7 @@ function onSubmitAddProgress(event) {
     if (!button.classList.contains('btn') ||
         button.classList.contains('btn-link') ||
         button.classList.contains('no-running-status') ||
+        button.classList.contains('pull-right') ||
         button.hasAttribute('disabled')) {
         return;
     }