Some fixes

[jbrichau]

Fixes #1326, #1360, #1359

Also disables the CORS functional webtest since it started failing in the github builds only...

[codecov]

Codecov Report

Patch coverage: 16.66% and project coverage change: -0.08 ⚠️

Comparison is base (1f56b5d) 54.20% compared to head (5e7a990) 54.13%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1361      +/-   ##
==========================================
- Coverage   54.20%   54.13%   -0.08%     
==========================================
  Files        8870     8870              
  Lines       72019    72018       -1     
==========================================
- Hits        39041    38989      -52     
- Misses      32978    33029      +51     

Impacted Files	Coverage Δ
...e.package/JSJsonParser.class/class/isDeprecated.st	0.00% <0.00%> (ø)
...ackage/WAWelcomeFiles.class/instance/welcomeCss.st	0.00% <0.00%> (ø)
...ctionalTestCase.class/instance/expectedFailures.st	100.00% <100.00%> (ø)

... and 8 files with indirect coverage changes

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