Relocate method 'isRotational' to OMVStorageDeviceAbstract. According the kernel documentation this sysfs information is for block devices (OMVBlockDeviceAbstract), but in the OMV context OMVStorageDeviceAbstract seems to be the better place.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1274 3c3d7b80-5828-415e-9f61-280b98178fff
Improve sysinfo scripts.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1275 3c3d7b80-5828-415e-9f61-280b98178fff
Add bash completion scripts.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1276 3c3d7b80-5828-415e-9f61-280b98178fff
Improve omv-sysinfo scripts. Thanks to Ralf Lindlein for the tip.

git-svn-id: http://svn.code.sf.net/p/openmediavault/code/trunk@1277 3c3d7b80-5828-415e-9f61-280b98178fff