Module without sharedvariables or process needs a sort of template
If we would like to build a module which should not contain its own process (because it is simply not needed, for example the experiment manager or plotter module) We still have to add them tot the JOAN ENUM, maybe we should make some sort of exceptions when this is not present JOAN HQ will also not try to instantiate them.
Maybe we can combine this issue with issue #150.