Bug 1039966 - Update gaiatest marionette_client to 0.8.1 and dependency moztest to >= 0.6
Bug 1042887 - Cannot scroll in messages app. Removed redundant "composer-messages-container". r=julien
Merge pull request #21927 from zacc/bug_1039966

Bug 1039966 - Update gaiatest marionette_client to 0.8 and dependency mo...
Merge pull request #22170 from azasypkin/bug-1042887-scroll-messages

Bug 1042887 - Cannot scroll in messages app. Removed redundant "composer-messages-container". r=julien