upgrade izpack to 5.0 + fix installation

 - upgrade to izpack v 5.0.0-beta10 (#28)
 - fix configuration to properly install all necessary files
 - change layout of directories in order to separate application/data/setting/resources (fix for #2 and #22)
 - fix wrong paths to resources (fix for #22)
 - add debug logging via aspectj
 - modify startup scripts
 - remove old install scripts that don't fit current directory layout
 - move resource locations to better fit installation process
 - some other fixes/improvement related to above
 - ...and probably break something too in the process