update to ember 1.3.2

Change-Id: Icb34922fe304b3f86571d6fd3528b0233883dbfe
Reviewed-on: https://gerrit.instructure.com/29853
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Stanley Stuart <stanley@instructure.com>
Product-Review: Stanley Stuart <stanley@instructure.com>
QA-Review: Stanley Stuart <stanley@instructure.com>