Fix for wrong parameters order during preparation of old method
descriptors.
All types of parameters are implemented and covered by tests.
Narrative spec was changed in generic service invokation part to be able
to define input and output mapping in symmetric way.
Auto generation mode was added into generic service call case.
updated spec to handle Apps; still need to implement App functionality
Code for job_id_output_field was implemented.
minor change in app input mapping field name
App loader is added.
added status method
added a simple cli to help debugging
minor script typo
Fix for a bug related to apps not getting updated after changes in
spec-repo.
minor script update