Feature request: add a slider on the bottom to scroll through time

[ghanku]

this is helpful if you want to discover how some publication spawned a new research domain or see the trends in a specefic research subject. this can be done by displaying only the publications up to the year selected by the user using the slider.

[edsu]

I would merge a PR with this in it, but I don't have time to address it myself at the moment.