Add compression savings information to V7000 / SVC GUI

With the addition of 'Uncompressed Volume Size' to the RACE SDK version 1.88.7 and onwards, this information will be available through RACE API integrated into SVC/V7000 in environments using Real-time Compression capability.

Since this information was not available in previous releases, the compression savings for a volume were combined with the thin-provisioning savings, without being able to understand savings distribution between compression and thin-provisioning, and more importantly - without being able to get the compression rate achieved for a specific volume.

Having this new information available in the SDK enables using 3 capacity related figures for a volume:
* Virtual size - the volume size observed by the host.
* Compressed size - amount of capacity actually provisioned for a volume. this includes savings from both Real-time compression and Thin-Provisioning.
* Uncompressed size - the effective uncompressed size of capacity provisioned for a volume. this is the projected size of the volume without compression. this includes savings from thin-provisioning only.

Having these 3 figures for each volume can be used to report on the following information in volume/pool/system level:
* Show the amount of capacity saved by using Real-time Compression
* Show what would be the size of data if compression was not used
* Show the compression rate (in %)
* Show compression ratio (e.g. - 3:1) which is the capacity multiplier factor you get from compression

These numbers should be added to the relevant CLI commands and to all GUI pages displaying capacity information. In addition to text information being displayed in the various pages, the cylinder-type capacity consumption graphics should be enhanced to show the distribution of savings between compression and thin-provisioning.