Moved class Valle to explorations part of src/test. Let us in general
keep exploratory objects/classes out of src/main.
Did some clean up of unised methods and classes
I removed all implicit parameters to operating system specific methods,
seeing as it will never make sense to be able to specify operating
system use-site.
Added 3 unit tests on experienced problems with starting factory groups,
deploying jars and executing reports.

I found it necessary to rewrite some of the cluster actor functionality,
as I found some possible sources of errors. This is not the final commit
on this issue...