Bug 896350 - Restore session when returning from guest mode. r=bnicholson
Bug 896059 - Allow super toasts in webapps. r=mfinkle
Bug 896350 - Don't close notifications unless explicitly requested to. r=blassey
backout 3c552ee3aa5e to fix commit message
Bug 896092 - Restore session when returning from guest mode. r=bnicholson DONTBUILD
Bug 867856 - Fix intermittent timeout of bug743094.js test case. r=h4writer

DONTBUILD
Backed out 7 changesets (bug 893222, bug 899256) for build bustage on a CLOSED TREE.

Backed out changeset 4aa234138f44 (bug 893222)
Backed out changeset 4b0bf28abdf2 (bug 899256)
Backed out changeset ea8b6ba99c05 (bug 893222)
Backed out changeset ac8220cb61d5 (bug 893222)
Backed out changeset d01358ff4b15 (bug 893222)
Backed out changeset 3baebe7cc655 (bug 893222)
Backed out changeset 4bdf8611ec57 (bug 893222)