Improve Hidden Factory view

[Maelstromeous]

Hidden factory view is a bit of a mess right now. It needs tidying up and making better.

1. Imports when there's many of them drop out of the container. Probably just needs an overflow: y on it.
2. Imports ideally should be horizontal, listing each product imported per factory. This will use more vertical space, but it will be massively cleaner, and will support the use of storage centers / redistribution hubs much more nicely.
3. Convert chips to their small class equivalent.