Bug 1028055 - Sender's email is not displayed In the details page of a received email
Bug 1027463 - Check for element before clearing. r=kgrandon
Bug 839491 - Handle unrecoverable app installs from the homescreen/search/collections apps r=kgrandon
Merge pull request #20837 from daleharvey/1027463

Bug 1027463 - Check for element before clearing. r=kgrandon
Merge pull request #20841 from KevinGrandon/bug_839491_unrecoverable_app_install

Bug 839491 - Handle unrecoverable app installs from the homescreen/search/collections apps
Merge pull request #20813 from jrburke/bug1028055-email-reader-title

Bug 1028055 - Sender's email is not displayed In the details page of a received email r=mcav