Fix: serve static files that exist in the outDir even when they don't…

[naturalethic]

… begin with the publicUrl (#303)

[codecov-io]

Codecov Report

Merging #536 into master will decrease coverage by 1.93%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #536      +/-   ##
==========================================
- Coverage   89.06%   87.13%   -1.94%     
==========================================
  Files          68       68              
  Lines        3438     3435       -3     
==========================================
- Hits         3062     2993      -69     
- Misses        376      442      +66

Impacted Files	Coverage Δ
src/Server.js	94.33% <100%> (+2.67%)	⬆️
src/assets/GlobAsset.js	58.66% <0%> (-40%)	⬇️
src/assets/CSSAsset.js	68.69% <0%> (-21.74%)	⬇️
src/assets/JSONAsset.js	84.61% <0%> (-7.7%)	⬇️
src/visitors/dependencies.js	81.81% <0%> (-5.2%)	⬇️
src/utils/getTargetEngines.js	93.25% <0%> (-3.38%)	⬇️
src/utils/installPackage.js	61.9% <0%> (-3.18%)	⬇️
src/assets/JSAsset.js	90.83% <0%> (-0.77%)	⬇️
src/visitors/fs.js	56.94% <0%> (-0.7%)	⬇️
src/assets/GraphqlAsset.js	100% <0%> (ø)	⬆️
... and 2 more

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[sompylasar]

@naturalethic Hi, could you please update this PR to resolve the conflict?
@DeMoorJasper Hi, what's blocking this besides the merge conflict?

Thanks!

[devongovett]

Going to close this. I think it has been resolved in the meantime. I'm not sure how files would get into the outDir that parcel didn't generate the URL for.