Followup tests commit for Bug 883822 / d17ada1 - r=rwaldron a=npotb

* Removes some useless tests and replaces them with tests that actually test d17ada1
(cherry picked from commit 2cff2fbbf3c70f410a50c59c141333052e7ae2b3)

Conflicts:
	apps/sms/test/unit/thread_ui_test.js