- fixed placeholder for select2 instances in settings - fixed issue in sending queue worker when newsletter does not exist
- Updates tests - Updates newsletter router and sending queue worker to reflect changes to the renderer
- Refactors SendingQueue worker class - Adds Maier router with a send() method + ability to specify sending method - Updates tests - Introduces 'stopping' and 'starting' cron states - Improves cron control mechanism Closes #276
- Updates mailer router's send() method