Improve release upgrade script.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1310 3c3d7b80-5828-415e-9f61-280b98178fff
Add openmediavault-installer udeb package. The scripts are executed by the Debian installer d-i during the installation.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1311 3c3d7b80-5828-415e-9f61-280b98178fff
Update file permissions.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1312 3c3d7b80-5828-415e-9f61-280b98178fff
Add missing icons.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1313 3c3d7b80-5828-415e-9f61-280b98178fff
* Updare control file.
* Update locales.
* Update changelog.

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1314 3c3d7b80-5828-415e-9f61-280b98178fff
Improve scripts

git-svn-id: svn://svn.code.sf.net/p/openmediavault/code@1315 3c3d7b80-5828-415e-9f61-280b98178fff