Merge pull request #43 from michaelnflx/hotfix

Disable the Janitor rule that requires Edda by default
Refactor to allow overriding the method for getting marked resources
Merge pull request #44 from michaelnflx/master

Refactor to allow overriding the method for getting marked resources
Add a date range for the Edda query to get instance owners
Merge pull request #45 from michaelnflx/master

Add a date range for the Edda query to get instance owners
Remove Image from the default config of Janitor Monkey