Work in progress
Add custom query to ConceptRepository
Update to latest versions of spring-data-rest et.al.
Cleanup pom.xml
Add query and REST support for finding treatments

- Only supported for indications at this moment
- Retrieves a list of treatments for a given indication concept
Clean up
Rename parameter for getTreatmentsByIndication
Merge branch 'feature/custom-query' into develop

* feature/custom-query:
  Rename parameter for getTreatmentsByIndication
  Clean up
  Add query and REST support for finding treatments
  Cleanup pom.xml
  Update to latest versions of spring-data-rest et.al.
  Add custom query to ConceptRepository
  Work in progress