HR should be able to view department details

[gregkorte]

Acceptance Criteria

• [x] Given user is viewing list of departments
• [x] When user clicks on a department
• [x] Then a view should be presented with the department name as a header
• [x] And a list of employees currently assigned to that department should be listed

Testing Criteria

• [x] * Your test suite must verify that a department object is in the response context and contains the expected key and values.