Moderation-aware formatters for EntityReference fields

I've found a minor performance optimization, in:

+++ b/workbench_moderation.module
@@ -142,6 +142,154 @@ function workbench_moderation_menu() {
+          $has_view_access = (entity_access('view', $target_type, $target_id) !== FALSE);
+          $has_update_access = (entity_access('update', $target_type, $target_id) !== FALSE);
+          $items[$nid][$delta]['access'] = ($has_view_access || $has_update_access);

We always compute the $has_update_access value, but actually, if $has_view_access == TRUE, the we don't need to.
If the update access is expensive to compute, then we can skip all of that by doing this:

$items[$nid][$delta]['access'] = (entity_access('view', $target_type, $target_id) !== FALSE) || (entity_access('update', $target_type, $target_id) !== FALSE);

Simple, and no functional change, except I suppose if the entity_access call has side-effects, but urgh, let's not go down that rabbit hole.