[FEATURES] for dev:module:observer:list 

- Type of an observer
- Sorting by event name
- Add area crontab

Thanks for merging!

![screen shot 2014-10-10 at 5 11 37 pm](https://cloud.githubusercontent.com/assets/372027/4588514/daa47306-5044-11e4-98eb-991ef964a4bc.png)