Merge pull request #36 from pirinthapan/master

staffnew tests
running test with SpringJUnit4ClassRunner, parameterizedrunner not working with Spring, mannually iterating testdata
adding integration test to newstudent test
student services tests
Added Staff Integration Test
Added staff integration tests
Merge pull request #37 from rharishan/master

Staff test
added  student service tests and refined staffservice tests
studentService covered integration tests
adding integration tests for examination service
refactoring service layer integration tests
changes to merge