Bug 870384 - Improve Mutt's Python tests for clarity in naming and structure. r=hskupin
Revert "Bug 870384 - Improve Mutt's Python tests for clarity in naming and structure. r=hskupin"

This reverts commit db556c4953c5340b3ed01d4b5fc0d9a8ef8c8017.
Bug 870384 - Improve Mutt's Python tests for clarity in naming and structure. r=hskupin
Bug 865690 - Ensure that JSBridge correctly handles application shutdown. r=ctalbert
Bug 884768 - Clean-up contents of frame.js. r=dhunt, r=ctalbert