Code review for spectroLoading branch.

 - Corrected bad default image height (255px --> 256px)
 - Moved default image height to image element (divs around image are designed to flex around image... only the image should have fixed dimensions)
 - Corrected an existing bug in the enforcedImageHeight binding - it should now work correctly (also checked, the enforcedImageHeight does override the default height created above)