[WIP] Configuration - imports #43

Configuration - imports #43
Added import from other resources
Looks to me like a SRP violation. 
In my opinion ResourceLoader should only load resources. 
ResourceLocator is missing part here. I believe this class should be split into at least two classes. 
ResourceLocator - localize resource
ResourceLoader - load resource

Also I'm not sure if this should be ResourceLoader or maybe more specific ConfigurationLoader and ConfigurationLocator.