Updated installation integrity checker to go over main module contents.
Fixed missing import path for "About" window.
Created tool and package preferences system.
Updated uninstall setup to not delete preferences.
Created development sub-menu and added toggle button to help menu.
Refactored a few of the utilities and created more tests.
Created a few new icons (develop sub-menu)
Updated installation integrity checker to go over main module contents. Fixed missing import path for "About" window. Created tool and package preferences system. Updated uninstall setup to not delete preferences. Created development sub-menu and added toggle button to help menu. Refactored a few of the utilities and created more tests. Created a few new icons (develop sub-menu)