because that's where it's actually being used exclusively.
don't update the spinbox value in
SizeDialogBase::onFreeSpaceBefore/AfterChanged() because if we do that the user
cannot enter values digit by digit anymore (we'll just overwrite what he entered
after each keystroke)
svn path=/trunk/extragear/sysadmin/partitionmanager/; revision=1119113
actually moved.
set single step for the sector spinboxes to align value
add a checkbox to turn off aligning the partition
svn path=/trunk/extragear/sysadmin/partitionmanager/; revision=1105207