closed issue 52 and closed issue 53
replaced passwords with confidential string
Merge remote-tracking branch 'remotes/upstream/master'

Conflicts:
	test/libs/auth/AdvPasswordTest.php
	test/libs/auth/TestRememberMe.Nontest.php
	test/libs/auth/UserTest.php
	test/libs/crypto/confidentialstring.test.php
	test/libs/session/Session.test.php