moved save button (#3792)

* moved save button

* added save back to the bottom

* Update show.html.haml

app/views/settings/preferences/show.html.haml

@@ -4,6 +4,9 @@
 = simple_form_for current_user, url: settings_preferences_path, html: { method: :put } do |f|
   = render 'shared/error_messages', object: current_user
 
+  .actions
+    = f.button :button, t('generic.save_changes'), type: :submit
+
   %h4= t 'preferences.languages'
 
   .fields-group