change disk replacement to accept only ZFS for now
remove legacy code for storage app; refactor urls using prefix
Implement powerd on/off as other enable/disable daemons.
Reload CIFS gracefully when applicable
Hackery and goo to keep https persistent across reboots.
check for zpool replace return code
bugfix while setting replaced disk parameters
Label disks before replacing.
Bug fix, show log, cache, spare in disk description ticket #204
replace button for disks datagrid; view logic for disk replacement