QtIFW

Vertical layout for LicenseAgreement page

License agreement was hard to read and the title sometimes
needed scrolling. Make the layout vertical so there is more
room for license title and license agreement text.

Change-Id: I46a9d4880b0219a2a92af19a8f17a39ba53faf6a
Task-number: QTIFW-815
Reviewed-by: Kai Koehne <kai.koehne@qt.io>