fix(101) unify the display of the bus summary stats that appear in th…

[robertmiddlekauff]

unify the display of the bus summary stats that appear in the modal and on the route-stats page; clean up some console errors; formatting fixes

Description

This PR does the following:

• fixes issue 101: Bus Route Stats and Modal have different CSS used to create similar appearances  #101
• some formatting fixes from running prettier on a few files (didn't touch many of those lines of code
• fixed some console errors from using class instead of classname and from not having a key on dom elements that were mapped over
• converted some of the styling to use flex mostly bc I think it's easier to use
• unified the styling of the modal and the route-stats page. I think the modal layout looks good on the route-stats page so I made them the same

Checklist

• I am requesting to merge into the dev branch
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

Screenshots

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[KyleDolezal]

My only minor quibble is that the styling changes result in a permanent outline around the x button on route info modals when running in Firefox.