divio/django-cms — pull request #2579 by ojii (2014-02-05 10:14:37+00:00)
Title: Nicer deprecation for placeholder_tags

* Instead of breaking placeholder_tags, makes it warn.
* Documented the deprecation of placeholdr_tags
* Added a check to the `cms check` command to check for deprecations
* Added a test for the deprecation check