Improve d-i package. Disable CD image in /etc/apt/sources.list.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1345 3c3d7b80-5828-415e-9f61-280b98178fff
Update icons.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1346 3c3d7b80-5828-415e-9f61-280b98178fff