BUGFIX Fixed calls to tinymce.template that doesn't exist anymore in NewsletterAdmin
BUGFIX Fixed calls to tinymce.template that doesn't exist anymore in NewsletterAdmin


guru-digital/silverstripe-newsletter,silverstripe-labs/silverstripe-newsletter,guru-digital/silverstripe-newsletter,silverstripe-archive/silverstripe-newsletter,silverstripe-archive/silverstripe-newsletter,silverstripe-labs/silverstripe-newsletter,guru-digital/silverstripe-newsletter,silverstripe-labs/silverstripe-newsletter