Code review comment for lp://staging/~mbudde/earcandy/reorganization

In this branch the tree has been reorganized to make the application a package (earcandylib). ear_candy.py has been moved to earcandylib/EarCandy.py and a earcandy script for running the application has been created. Data files have been moved to data/.

A distutils script (setup.py) has also been added. A tar ball can now be created with ./setup.py sdist.

A .desktop file has been added for easily running the application when it has been installed.