Bug 1062783 - Replace the loadFile() function used to load JSON files with the new shared function in the homescreen app R=kgrandon
Bug 1062783 - Update unit test for new json loader r=gauravmittal
Merge pull request #24397 from KevinGrandon/gauravmittal1995-1062783

Bug 1062783 - Replace the loadFile() function used to load JSON files with the new shared function in the homescreen app