Ensure images in manuscripts don't overflow the viewable area
Currently images in Wax are shown at full resolution, with no options to rescale or position them. This means that largish images will be wider than the viewable area, and part of the image will be chopped off and unviewable.
As a preliminary fix we should add some simple CSS styling to images within Wax, to scale them down when they exceed the width of the viewable area. This will probably involve something like:
max-width: 100%; object-fit: scale-down;