CA-147190: XenCenter About dialog references Marathon
-Updated legal notices in About dialog and Legal Notices dialog

Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>
CA-147190: XenCenter About dialog references Marathon:
-Changes following the code review: To minimize the distance between the OK button and the "View Legal Notices" link, the latter has been aligned to the Bottom-Left and the height of its container row has been set to 100% instead of Auto.
CA-147190: XenCenter About dialog references Marathon
-Enabling auto-sizing on the TableLayoutPanel and on the Window itself. This will keep the spacing between the UI elements correct.
Merge pull request #225 from GaborApatiNagy/CA-147190

CA-147190: XenCenter About dialog references Marathon