Bug 864993 - Part 2: Properly implement app update collection; r=rnewman
Bug 700926. Refactor image sizing to be closer to the spec and not tied to backgrounds. r=roc

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extra : rebase_source : b6fa8a526f8642089d9cd6af47948006f2673ab6
Bug 700926; reshuffle background image drawing. r=roc

--HG--
extra : rebase_source : 4e4786a75cfdccc47ffa524331792eab3a7a83ea