The font-size of the div containing each image was causing the images to start shifting
downward when their height dropped below the font-size.

This also gets rid of the groups, which were messing up the layout.

All of the entities are rendered to the canvas. It only renders images, so there are no
names, height bars, etc.

This reverts commit 4c58eb9b94.

This reverts commit 7182f0479e.

Still very rough around the edges...

The viewport attribute is now set, which should make mobile devices show it a bit
more correctly. I updated the bottom-names to be placed properly on mobile.

Very large entities are confusing to add - they appear for a brief moment
and then grow off the screen. This shows an arrow if an entity is at least
ten times taller than the viewport.