Bug 825716 - Remove edge cases in MMod::foldsTo. r=dvander
Bug 826106 - Allow GeckoApp to handle context menus. r=mfinkle
Bug 825176 - Use margin to hide forward button. r=sriram
Bug 825820 - Call WarningsDatabase.prune at the end of Build().  r=gps.

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extra : rebase_source : aefe3d3e1e3f5edacbb83bb0c44031c1cfb200a1