CA-119177: On Prechecks page of Rolling Pool Upgrade wizard, the error should only be visible when errors are found.

If errors are found the error info at the bottom of the page shows up, however this should not happen while still checking and before any errors have been found.
Same applies for Prechecks page of Install Update Wizard.

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
CA-126455: VM Properties dialog: Fixed the bug where the home server value was reset on revisiting the page from other page

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Merge pull request #52 from MihaelaStoica/CA-126455

CA-126455: VM Properties dialog: Fixed the bug where the home server val...
Merge pull request #50 from MihaelaStoica/xs64bit

CA-119177: On Prechecks page of Rolling Pool Upgrade wizard, the error s...
Merge pull request #51 from kc284/xs64bit

CAR-107 bug fixes.