INTYG-1270 & INTYG-1271

- Uppdaterat extern och intern modell för FK7263
- Uppdaterat konverters mellan de olika formaten
- Uppdaterat testdata för unit-tester
- fixade databindingen i frontend rörande samsjuklighet
Fixade en schemabugg i fk
Mer converter-fixar (INTYG-1271)
Added code skeleton.

Generated through maven archetype for version 1.2 and modified to fit 1.3. Still
contains discrepancies that needs to be addressed.
Starting work on parsing MIM for SLU.
Restructuring code to look like the other modules.
Adding external model. Not finalized.

There are some extreme inefficiencies in the model as in the MIM. Will implement
if required.
Transport to external converter done.
Start of ext->transport and better nullhandling.
Additional and cleaner functionality in converter.
Completing exernal -> transport.
Adding missing Vardgivare (not present in MIM).
Fixed tests and created first resources for it.

Starting to add files with valid configurations that should be able to be
converted by the convertors.

Valid-minimal might be too small.