Error boundaries

[swaterkamp]

Add new ErrorBoundary component and use it where seemingly appropriate.

[codecov]

Codecov Report

Merging #1046 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #1046      +/-   ##
==========================================
- Coverage   13.49%   13.47%   -0.02%     
==========================================
  Files         820      821       +1     
  Lines       26605    26641      +36     
  Branches     5615     5606       -9     
==========================================
  Hits         3590     3590              
- Misses      21565    21599      +34     
- Partials     1450     1452       +2

Impacted Files	Coverage Δ
gsa/src/web/components/dashboard/dashboard.js	0% <0%> (ø)	⬆️
gsa/src/web/pages/extras/feedstatuspage.js	0% <0%> (ø)	⬆️
gsa/src/web/pages/radius/radiuspage.js	0% <0%> (ø)	⬆️
gsa/src/web/pages/extras/trashcanpage.js	0% <0%> (ø)	⬆️
.../src/web/components/errorboundary/errorboundary.js	0% <0%> (ø)
gsa/src/web/pages/help/about.js	0% <0%> (ø)	⬆️
gsa/src/web/pages/extras/cvsscalculatorpage.js	0% <0%> (ø)	⬆️
gsa/src/web/app.js	0% <0%> (ø)	⬆️
...sa/src/web/components/dashboard/display/display.js	0% <0%> (ø)	⬆️
gsa/src/web/entities/page.js	0% <0%> (ø)	⬆️
... and 6 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update dddb5ef...c1b5e34. Read the comment docs.