Bug 1052136 - Clean up mozL10n API use in Communications, part 5, matching+utilities

https://bugzilla.mozilla.org/show_bug.cgi?id=1052136
yeah, there's no way around it yet :( We don't have a technology to reference entity value from within another entity yet, so we need to do this here.

In 2.3 we should start being able to remove this get