[FEATURE] dev:module:observer:list -> add crontab area
[FEATURE] dev:module:observer:list Add getObserverType() to the
output list to see clearly the instance type.
[FEATURE] dev:module:observer:list Add --sort option to sort for
Event name
[FIX] grammar
Merge pull request #413 from Zookal/develop

[FEATURES] for dev:module:observer:list