whitespace fixes

Removed some whitespaces and fixed a few non-breakable spaces. Only cosmetics though.
added iTunes import script

Added a small PHP script that imports tracks from an iTunes library. Make your Auris database your current working directory and call the script with the "iTunes Music Library.xml" as an argument.
restructured things a bit

The source/db directory has been moved up one level and is now called "auris". The source/tools directory has been moved one level up as well. Also modified the installation command such that the new auris directory is copied as-is to include/auris. There is still some cleanup to be done.
removed old files

Cleaned up the repository. All the legacy code is now gone and the Auris music database project looks clean and simple. Nice.