wip: referenceList
wip: went back to manually adding reciprocal references for users/projects;  fixed up tests to reflect this
wip: got tests passing
Merge remote-tracking branch 'origin/feature/referenceList' into feature/checks.  Note that the API tests are failing at this stage.

Conflicts:
	src/models/ProjectModel.php
	src/models/UserModel.php
	src/service/sf.php
	test/php/AllTests.php
	test/php/commands/AllCommandTests.php
	test/php/model/AllModelTests.php
	test/php/model/ProjectModel_Test.php
	test/php/model/UserModel_Test.php