add samples
changes for 'dist'
change to pdfbox 2.0.0 rc3, add samples, upgrade doku, ...
improve backup, add pbeencrypt, pbedecrypt
add PBE to BackupTask
move bc to worker-bouncycastle, update to iText 5.5.8
create worker for bouncy castle
check missing files
add worker-backup: Store files in an archive file (zip, tar, tar.gz, tar.bz2)
task for backup ...