Processor: Decider and Activity processor now do processing async

Which means we'll no longer block if I make an external call to another web service for example.

StoreInElasticsearchActivity is still blocking internally, it should use async calls to elasticsearch too.
But getting my head round these Future's is killing me, https://github.com/scala/async coming next
I think.
Move test to correct package
Simple command line so I can force my local processor to be the only one running