am 341220b9: Merge "Widget tray alignment according to UX spec - Fixing an issue where widget preview is not loaded do to faulty canceling of loading async task when view is detached from the window." into ub-launcher3-burnaby

* commit '341220b954699dbf440024cfc2251f08d6fbc39f':
  Widget tray alignment according to UX spec - Fixing an issue where widget preview is not loaded do to faulty canceling of loading async task when view is detached from the window.