Small UI changes to vm show
Add command to manage VM's disks

Disks can be added, deleted, resized
Add status information to VM show
Org show: search by name by default

Use option --use-ids to search by IDs
VDCs can be searched also by Name + Organization Name
Catalogs can be searched also by Name + Organization Name
vApps can be searched also by Name + VDC Name + Organization Name
VMs can be searched also by Name + VDC Name + Organization Name + vApp