fix missing oval def subsections

[sarahd93]

On the oval def details page the sub sections were all empty because of a parsing error in the oval def model.

(The error was similar to the one that caused #2388)

Checklist:

• Tests
• CHANGELOG Entry

[codecov]

Codecov Report

Merging #2396 into gsa-20.08 will increase coverage by 0.17%.
The diff coverage is 82.57%.

@@              Coverage Diff              @@
##           gsa-20.08    #2396      +/-   ##
=============================================
+ Coverage      52.76%   52.93%   +0.17%     
=============================================
  Files           1070     1070              
  Lines          25789    25835      +46     
  Branches        7312     7332      +20     
=============================================
+ Hits           13607    13677      +70     
+ Misses         11058    11039      -19     
+ Partials        1124     1119       -5     

Impacted Files	Coverage Δ
gsa/src/gmp/commands/wizard.js	9.23% <0.00%> (ø)
gsa/src/web/components/error/errorpanel.js	100.00% <ø> (ø)
gsa/src/web/pages/cpes/details.js	11.11% <ø> (ø)
gsa/src/web/pages/extras/trashactions.js	5.49% <0.00%> (ø)
gsa/src/web/pages/hosts/dialog.js	50.00% <ø> (ø)
gsa/src/web/pages/policies/detailspage.js	100.00% <ø> (ø)
gsa/src/web/pages/policies/row.js	100.00% <ø> (ø)
gsa/src/web/pages/portlists/detailspage.js	34.48% <ø> (ø)
gsa/src/web/pages/portlists/row.js	55.55% <ø> (ø)
gsa/src/web/pages/reportformats/detailspage.js	33.33% <ø> (ø)
... and 32 more

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