Bug 1014460 - Extend the retention period of UITour.seenPageIDs. r=ttaubert
merge m-c to fx-team
Bug 1017029 - [appmgr v2] Validation is not triggered after the manifest file has changed. r=ochameau
Bug 1016924 - [appmgr v2] support non-device runtimes. r=ochameau
Backed out changeset 2fb11b6f1dfe - fail in test_webappsActor.js
Merge latest green fx-team changeset and mozilla-central