To avoid having to update file or directory paths in 3 script locations (PHP Common, Shell Common and Python File path resolver)
The .json file will references by all 3 systems, allowing them to generate paths from one central location. Files can be then moved around, the file updated and all 3 languages will up to date without any other work.
Quick test for the common.php directory and filepath resolver to ensure it's generating the correct paths
And small fix for incorrect firstrun.ini location (thanks test case :) )