Bug 885158 - If a message is sent on a closed IPC channel, delete it immediately. r=bent, a=leo+

Our old behavior was to enqueue it until the channel gets destructed.
Bug 802742 - Marionette should list all failed tests at the end of the testrun. r=mdas, a=test-only
Bug 883048 - [MMI] Send a ussd code while in airplane mode is allowed and doesn't show any notification. r=vicamo, a=leo+