Patched installer to fix all the issues introduced with installing to Program Files

This patch should remove the dependency on Admin privelages. It should also fix any of the issues we were seeing with the updater on Windows platforms. Being able to choose where you install is a worthwhile sacrifice for better support universally. Users can still manually move the installed files out of AppData
Removed unused updater.nsi

Windows is now back to using the same update pattern as other platforms