Customize: Fix i18n by re-using the `add_new_item` post type label instead of using a post type name in a generic string.

Props afercia, westonruter.
See #34923.
Fixes #37895.

Built from https://develop.svn.wordpress.org/trunk@38479


git-svn-id: http://core.svn.wordpress.org/trunk@38420 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-customize-nav-menus.php

@@ -939,9 +939,7 @@ final class WP_Customize_Nav_Menus {
 							<?php $post_type_obj = get_post_type_object( $available_item_type['object'] ); ?>
 							<?php if ( current_user_can( $post_type_obj->cap->create_posts ) && current_user_can( $post_type_obj->cap->publish_posts ) ) : ?>
 								<div class="new-content-item">
-									<input type="text" class="create-item-input" placeholder="<?php
-									/* translators: %s: Singular title of post type or taxonomy */
-									printf( __( 'Create New %s' ), $post_type_obj->labels->singular_name ); ?>">
+									<input type="text" class="create-item-input" placeholder="<?php echo esc_attr( $post_type_obj->labels->add_new_item ); ?>">
 									<button type="button" class="button add-content"><?php _e( 'Add' ); ?></button>
 								</div>
 							<?php endif; ?>

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38478';
+$wp_version = '4.7-alpha-38479';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.