This reverts commit 2fb58dc01c.
The original commit included an unexpected deletion of _all_
translations in certain languages. This was unintented, and appears to
have been a merging artefact.
This change will be re-submitted as a separate PR.
This patch carries a translation risk, as we change the default
progression button.
Remove the customisation button all together, and make the customisation
options something we offer as part of flashing an image that
has that capability.
While this adds an additional click to the flash sequence, it should
provide a steer to people who are flashing customisable images to make
use of this capability, potentially avoiding an additional pass through the
Imager.
