REST API: Fix incorrect capability check on term create.

Change the capability check used in `WP_REST_Terms_Controller` when creating a new term is attempted, from `manage_terms` to `edit_terms`. This matches the behavior within the WordPress admin. See #35614.

Props johnbillion, rmccue, rachelbaker, helen, jorbin, SergeyBiryukov.

Merges [39402] to the 4.7 branch.
Fixes #38958 for 4.7.

Built from https://develop.svn.wordpress.org/branches/4.7@39403


git-svn-id: http://core.svn.wordpress.org/branches/4.7@39343 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php

@@ -349,7 +349,7 @@ class WP_REST_Terms_Controller extends WP_REST_Controller {
 		}
 
 		$taxonomy_obj = get_taxonomy( $this->taxonomy );
-		if ( ! current_user_can( $taxonomy_obj->cap->manage_terms ) ) {
+		if ( ! current_user_can( $taxonomy_obj->cap->edit_terms ) ) {
 			return new WP_Error( 'rest_cannot_create', __( 'Sorry, you are not allowed to create new terms.' ), array( 'status' => rest_authorization_required_code() ) );
 		}
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-RC1-39401';
+$wp_version = '4.7-RC1-39403';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.