use trash icons instead of delete icons for report formats and schedules

[sarahd93]

What:

Change delete icons on report format detailspage and schedule detailspage to trashcan icons.

Why:

The report format detailspage and the schedule detailspage misleadingly show delete icons when it should be trashcan icons instead. Clicking on the icon moves the entities to the trashcan.

How:

Checklist:

• Tests
• CHANGELOG Entry

[codecov]

Codecov Report

Merging #2459 into gsa-20.08 will increase coverage by 0.16%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           gsa-20.08    #2459      +/-   ##
=============================================
+ Coverage      52.76%   52.93%   +0.16%     
=============================================
  Files           1070     1070              
  Lines          25789    25831      +42     
  Branches        7312     7358      +46     
=============================================
+ Hits           13607    13673      +66     
+ Misses         11058    11039      -19     
+ Partials        1124     1119       -5     

Impacted Files	Coverage Δ
gsa/src/gmp/commands/feedstatus.js	100.00% <ø> (ø)
gsa/src/gmp/commands/wizard.js	9.23% <ø> (ø)
gsa/src/gmp/gmpsettings.js	95.74% <ø> (ø)
gsa/src/gmp/models/alert.js	100.00% <ø> (ø)
gsa/src/gmp/models/event.js	22.91% <ø> (+2.17%)	⬆️
gsa/src/gmp/models/nvt.js	98.87% <ø> (ø)
gsa/src/gmp/models/ovaldef.js	94.64% <ø> (ø)
gsa/src/gmp/models/policy.js	100.00% <ø> (ø)
gsa/src/gmp/models/portlist.js	92.59% <ø> (+0.28%)	⬆️
gsa/src/gmp/models/report/parser.js	97.85% <ø> (+0.38%)	⬆️
... and 73 more

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