Bug 992773 - maxBuffer for child_process.exec is exceeded in |make build-test-integration|
Bug 983631 - [Messages] After deleting a message thread the notification persists forever.

* Add closeNotificationsForThread api and make it return as promise
* Apply julien's promise-based test case
Bug 988057 - [Stopwatch][l10n] Localization of stopwatch is broken.
Bug 991567 - [Tarako][Email] Email app is killed while downloading an attachment. r=asuth
Merge pull request #18058 from mcav/gelam-tarako

Bug 991567 - [Tarako][Email] Email app is killed while downloading an at...
Merge pull request #18019 from yurenju/maxBuffer

Bug 992773 - maxBuffer for child_process.exec is exceeded in |make build... r=@cctuan
Merge pull request #17630 from steveck-chung/bug-983631

Bug 983631 - [Messages] After deleting a message thread the notification persists forever. r=julienw
Merge pull request #17950 from mcav/stopwatch-l10n

Bug 988057 - [Stopwatch][l10n] Localization of stopwatch is broken. r=gaye
Bug 968661 - Extract new build module webapp-shared.js from webapp-zip.js