Importer Rework - Python Class Structuring / Logic

[Y4nnikH]

Check if current dependency-structure makes sense. Are there unnecessary / incorrect calls to init? Other redundancies? Incorrect mixing of model and controller files?

- importer_base
  -> {import_object, import_rule, ...}
      |->            |->          |-> import

[tpurschke]

@Y4nnikH takes the lead here