Bug 777402 -  Use app name + manifest url hash as unique name for apps but forbid multiple apps per origin and webapposutils refactoring. r=myk,fabrice
Bug 777402 - Implement support for packaged apps via the installPackage function in the mozapps DOM API in desktop web runtime. r=myk,wesj,fabrice
Bug 900297: Folds MToDouble in its input if it is already a double; r=sstangl
bug 873567 - Fix packaged apps test. r=fabrice

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extra : rebase_source : 2cb17e8cd0b65ed02f1de401b42f690431a709da