Refactor ABCAdapter

Currently there is a lot of functionality (not all belonging together) in AbcAdapter class.
As a first step (target of this task) is to extract separate functionality and split into multiple modules:

• preparation/manipulation of Adapter Input Tree
• manipulations after submit of parameters from web UI, to match the adapter expected params
• manipulation of adapter results (before storage)
• others?

Another suggested step (possible target of a subtask) : create a model class for an adapter InputTree (instead of the current ad-hoc list of dictionaries). Then all InputTree readers should return the new model, and the usages should be adapted as well.