Add cards on analysis page

[mccalluc]

• Towards Improve page UI/UX #94
• Wrap each column interface in a card.
• Use the space at the top more efficiently, too.
• The formatting of the slider isn't great, but if the overall layout here seems like an improvement, I'd like to leave that for later.

For reviewer:

• This is subjective, but does this seem to present the steps in defining the analysis a little more clearly?

[ekraffmiller]

This looks great! I think the new layout makes everything happening on the page more understandable 👍