PersonResolver.person should return a Maybe<Person> rather than Person which may be null
Update people controller to use PeopleQueryResolver
Merge branch 'mbst-4778-people-equivalence' into stage

* mbst-4778-people-equivalence:
  Update people controller to use PeopleQueryResolver
  PersonResolver.person should return a Maybe<Person> rather than Person which may be null

Conflicts:
	src/test/java/org/atlasapi/equiv/ChildRefUpdateTaskTest.java
	src/test/java/org/atlasapi/remotesite/pa/PaBaseProgrammeUpdaterTest.java