Adds tab indexing to the control for allocation and changes label names.
Corrects mistake that led to exception being thrown when the Disk Size is decreased in the the New Disk Dialog.
-Changed code, because API needs 0-100 percent values as 0..1
-Code for HBA SRs
-Changed free space check for new VDIs to condider initial disk size only
when the SR is thin provisioned
Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>