editoast: rename etcs signal to stop marker

[flomonster]

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.60%. Comparing base (c38d369) to head (2244e54).

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@@            Coverage Diff             @@
##              dev   #10816      +/-   ##
==========================================
- Coverage   82.60%   82.60%   -0.01%     
==========================================
  Files        1084     1084              
  Lines      107444   107444              
  Branches      729      729              
==========================================
- Hits        88756    88750       -6     
- Misses      18646    18652       +6     
  Partials       42       42              

Flag	Coverage Δ
editoast	74.39% <ø> (-0.02%)	⬇️
front	90.51% <ø> (ø)
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.58% <ø> (ø)
tests	87.91% <ø> (ø)

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[Tristramg]

Sorry, I don’t know how to test it either. Apparently it’s still work in progress. To show that we incorporated the icons, I just replaced tvm icons by etcs 😬