Accessibility fixes

[shinyichen]

• Aria label
  • Removed aria-labeledby in most <FormControl> since <FormLabel> sets htmlFor for children input.
  • Except for the Switch component which requires a label.
• Fixed contrasts
• Improved keyboard accessibility

[codecov]

Codecov Report

Attention: Patch coverage is 15.41667% with 203 lines in your changes are missing coverage. Please review.

Project coverage is 47.2%. Comparing base (b077706) to head (4ec6ebd).
Report is 45 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #476     +/-   ##
========================================
- Coverage    47.3%   47.2%   -0.1%     
========================================
  Files         413     425     +12     
  Lines       41996   44488   +2492     
  Branches      597     596      -1     
========================================
+ Hits        19861   20967   +1106     
- Misses      22124   23510   +1386     
  Partials       11      11             

Files	Coverage Δ
src/components/BibstemPicker/BibstemPicker.tsx	65.4% <100.0%> (+0.2%)	⬆️
src/components/DataDownloader/DataDownloader.tsx	100.0% <100.0%> (+2.4%)	⬆️
src/components/Expandable/Expandable.tsx	89.3% <100.0%> (ø)
...c/components/NavigationMenu/SideNavigationMenu.tsx	17.8% <ø> (+0.2%)	⬆️
...rc/components/SearchBar/AllSearchTermsDropdown.tsx	52.6% <100.0%> (+0.4%)	⬆️
src/components/Slider/Slider.tsx	64.9% <100.0%> (+0.2%)	⬆️
...izations/Containers/AuthorNetworkPageContainer.tsx	22.0% <ø> (+0.1%)	⬆️
...lizations/Containers/PaperNetworkPageContainer.tsx	23.4% <ø> (+0.1%)	⬆️
...lizations/Containers/ResultsGraphPageContainer.tsx	15.6% <ø> (+0.2%)	⬆️
src/pages/paper-form.tsx	73.0% <100.0%> (-1.2%)	⬇️
... and 32 more

... and 12 files with indirect coverage changes