Bug 1071225 - Fix closing the FxAccountsOAuthClient tab with e10s. r=MattN

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extra : rebase_source : 5ffdd51c674dfc22ac301ab54b317b9219d8e07f
Bug 1071870 - Log.jsm: Fix support for Log.Level.All in some services/ modules. r=markh
Bug 1072014 - Log.jsm: Allow logging of falsy arguments. r=Unfocused