New translations zen-preferences.ftl (Spanish)

Author: mr-cheffy

es-ES/browser/browser/preferences/zen-preferences.ftl

@@ -52,6 +52,8 @@ zen-theme-marketplace-check-for-updates-button =
 zen-theme-marketplace-updates-success = Tema actualizado exitosamente
 zen-theme-marketplace-updates-fail = ¡No se encontraron actualizaciones!
 pane-zen-marketplace-title = Tienda de Temas
+zen-look-and-feel-legacy-toolbar = 
+    .label = Use legacy toolbar position (Disclaimer: This feature is just for people who are used to the old toolbar position)
 zen-theme-marketplace-link = Visitar la tienda
 pane-zen-CKS-title = Atajos de teclado
 category-zen-CKS =