Update typography; fixes #2093

[cbeer]

I've tried to reconcile the table in #2093 with the theme defaults in https://material-ui.com/customization/default-theme/, and only adding the difference to our theme. Hopefully I translated everything correctly...

[codecov-io]

Codecov Report

Merging #2102 into master will decrease coverage by 0.31%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2102      +/-   ##
==========================================
- Coverage   94.36%   94.04%   -0.32%     
==========================================
  Files          81       81              
  Lines         923     1042     +119     
==========================================
+ Hits          871      980     +109     
- Misses         52       62      +10

Impacted Files	Coverage Δ
src/components/WindowSideBarInfoPanel.js	100% <ø> (ø)	⬆️
src/components/LabelValueMetadata.js	100% <ø> (ø)	⬆️
src/components/WindowTopBar.js	80% <ø> (ø)	⬆️
src/components/WorkspaceMenuButton.js	90% <0%> (-1.67%)	⬇️
src/state/actions/window.js	68.96% <0%> (-1.63%)	⬇️
src/components/WorkspaceMenu.js	85.96% <0%> (-0.25%)	⬇️
src/components/ThumbnailNavigation.js	96.8% <0%> (-0.02%)	⬇️
src/components/CompanionArea.js	100% <0%> (ø)	⬆️
src/components/NestedMenu.js	100% <0%> (ø)	⬆️
src/components/CompanionWindow.js	100% <0%> (ø)	⬆️
... and 4 more

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[jkeck]

Not sure if these are copypasta typos or intended. Would also like @jvine to take a look a the Netlify deploy to 👍 it

[jvine]

One problem from a (now fixed) typo in my table:

Button should have letter-spacing of 0.09em (not 0.9em).

No

Yes

[aeschylus]

Looks great at the demo link.