Begain writing integration tests using Specflow
First integration test created.
Implemented integration test for AddCandidate.
Tests for set status and pass on candidate.
Adding integration tests for Hire Candidate
Finished the Hire Candidate integration test
Modified entity model to better support different styles of read/write scenarios viz-a-viz foreign keys
Added a migration for recent FK changes
Merge branch 'feature/integration-tests' into develop