* Use hostname from config.xml.
* Remove useless code in proftpd engine module.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1539 3c3d7b80-5828-415e-9f61-280b98178fff
Mantis 0001167: /etc/postfix/smtp_header_checks is not updated during hostname changing.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1540 3c3d7b80-5828-415e-9f61-280b98178fff
Fix JS runtime issue: Uncaught TypeError: Cannot read property 'unmask' of undefined.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1541 3c3d7b80-5828-415e-9f61-280b98178fff
Mantis 0001166: Samba guest allowed directive option doesn't allow guest login when privileges are set.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1542 3c3d7b80-5828-415e-9f61-280b98178fff
Update docs.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1543 3c3d7b80-5828-415e-9f61-280b98178fff