bugfix: str.find method returns index which fails on if statement
bugfix: do not create the new disk when replacing in-place
replace in-place option
delete button should lookup for the nearest dialog widget not hardwired id
Improve handling for in-place disk replacement.
UI for detach disk, not yet fully implemented
bugfix: __unlabel_disk accepts only one argument
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.
