added slug to duplicate-named post types that share a singular name
Merge branch 'master' of github.com:jarednova/acf5-beta-1

* 'master' of github.com:jarednova/acf5-beta-1:
  added slug to duplicate-named post types that share a singular name
  Display the singular name of a post_type in the Relationship filter dropdown
Merge branch 'master' into master-new

* master:
  added slug to duplicate-named post types that share a singular name
  Display the singular name of a post_type in the Relationship filter dropdown