Bug 2004511: Profile image in image block adjustments

As the profile image does not have 'isdecorative', 'alttext', and
'altiscaption' options we need to handle that when rendering the image

Change-Id: Ifca8eeef80255de9b3099f43f8572417865b9f9a
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>
(cherry picked from commit c54cd029)