Replace # blocks column in sample table view with icons matching block types

[ml-evs]

This will require some API piping of which block types are available for a given sample, but we could replace the kinda ugly count with very simple icons (or even just a blue "X" for X-ray, red "EC" for echem etc)...

[jdbocarsly]

I like this idea! we'll need icons for any type of block we create, with maybe a fallback generic intstrument icon that can be different colors...

[ml-evs]

I think we could make a really nice popper thing for block summaries, so when you mouse over the icon you also get some of the metadata that people are currently stuff in name/title, e.g., once ETL is in (lol), the echem block could provide a summary of charging protocol that the popper thing could display. This is data we want to be able to search over anyway, but it could be a nice way of hiding some of that complexity whilst making it available in the UI without knowing exactly what to search for.