front: move the deployment settings in high level context

[clarani]

closes #10834

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.60%. Comparing base (f4e0c84) to head (ce6442b).
Report is 32 commits behind head on dev.

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #10852      +/-   ##
==========================================
+ Coverage   82.56%   82.60%   +0.04%     
==========================================
  Files        1084     1084              
  Lines      107256   107387     +131     
  Branches      728      729       +1     
==========================================
+ Hits        88558    88711     +153     
+ Misses      18657    18634      -23     
- Partials       41       42       +1     

Flag	Coverage Δ
editoast	74.39% <ø> (-0.01%)	⬇️
front	90.52% <100.00%> (+0.05%)	⬆️
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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[kmer2016]

Small suggestion, but very nice solution !