Add missing translation and fix indentation

app/views/shared/_common_globalize_locales.html.erb

@@ -8,7 +8,7 @@
     </span>
     <%= select_tag :select_language,
                    options_for_select_language(resource),
-                   prompt: "Choose language",
+                   prompt: t("admin.translations.select_language_prompt"),
                    class: "js-select-language" %>
     <div class="margin-bottom">
       <% if manage_languages %>

config/locales/en/admin.yml

@@ -1631,6 +1631,7 @@ en:
         card_title: Edit card
         submit_card: Save card
     translations:
+      select_language_prompt: "Choose language"
       remove_language: Remove language
       add_language: Add language
     change_log:

config/locales/es/admin.yml

@@ -1629,6 +1629,7 @@ es:
         card_title: Editar tarjeta
         submit_card: Guardar tarjeta
     translations:
+      select_language_prompt: "Seleccionar idioma"
       remove_language: Eliminar idioma
       add_language: Añadir idioma
     change_log: