Bug 1012466 - Introduce AddonManager shutdown barrier. r=irving
Bug 1012466 - Properly synchronize experiments shutdown with the AddonManager by using its shutdown barrier. r=bsmedberg
Bug 1012466 - Test cleanups. r=bsmedberg
Bug 1025804 - Implement a monitor actor to live stream performances data. r=paul
Bug 1036366 - Fix 'TypeError: this.nodelist is null' if a NodeListActor is initialized with a null nodelist. r=pbrosset