Create Live Media should also write to DVD

[probonopd]

Create Live Media should also be able to write to DVD. This is handy for longer-time archival, and especially with RW media for testing many builds in parallel without needing too many USB drives.

# Format
/usr/local/bin/dvd+rw-format -gui -blank /dev/cd0 # Needed?

# Burn
/usr/local/bin/cdrecord -v gracetime=3 -sao driveropts=burnfree -data -