Improved selection of files to be synced or removed. Some PEP8 code styling fixes.
Improved selection of files to be synced or removed. Some PEP8 code styling fixes.

At first, the iTunes playlists as well as the target directory are
scanned and file lists are created. Then lists of files are created:

- files to be copied from iTunes to droid
- files that exist in iTunes and on droid, that will be ignored
- files to be removed from the droid

The output of the command is made more compact. Furthermore the code
has been made more py3 compliant.

almonteb/DroidSync