WordCamp Misc: Update filter for disabling Gutenberg on CPTs.

The previous filter was removed in 1.5, and the new one was added in 1.5.2.

See WordPress/gutenberg#3158

git-svn-id: https://meta.svn.wordpress.org/sites/trunk/wordcamp.org/public_html/wp-content/mu-plugins@6056 74240141-8908-4e6f-9713-ba540dce6ec7

wcorg-misc.php

@@ -51,6 +51,7 @@ function wcorg_enforce_public_blog_option( $value ) {
  * We want to let organizers use shortcodes inside Text widgets
  */
 add_filter( 'widget_text', 'do_shortcode' );
+// todo can remove this after ugprade to 4.9
 
 /**
  * Output a menu via a shortcode
@@ -282,9 +283,9 @@ function wcorg_flush_rewrite_rules() {
  * Many of WordCamp.org's CPTs make extensive use of meta boxes. Since these are not currently supported in the
  * Gutenberg editor, this limits the Gutenberg content editing links to posts and pages.
  *
- * TODO: revisit this when Gutenberg supports meta boxes.
+ * TODO: revisit this when Gutenberg supports "advanced" meta boxes.
  */
-add_filter( 'gutenberg_add_edit_link_for_post_type', function( $bool, $post_type ) {
+add_filter( 'gutenberg_can_edit_post_type', function( $bool, $post_type ) {
 	$allowed_post_types = array(
 		'post',
 		'page',