Slideshows

[mberk]

• Add the ability to step backwards and forward through a sequence of order books
• Include a play button that will automatically cycle through them
• Default behaviour could be to replay the order books at the frequency they were generated in real-time (using the publish times), and fast forward/rewind controls could speed this up
• Once other visualisations are implemented (e.g. vertical ladders), it should be possible to create a slideshow for any of them