front: use rolling stock images and improve performance of the rolling stock card

[clarani]

closes #2956

[codecov]

Codecov Report

Merging #3042 (b2ba61d) into dev (68da147) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##                dev    #3042      +/-   ##
============================================
- Coverage     39.00%   38.99%   -0.01%     
  Complexity     1705     1705              
============================================
  Files           606      606              
  Lines         18525    18528       +3     
  Branches       2495     2497       +2     
============================================
  Hits           7225     7225              
- Misses        10890    10893       +3     
  Partials        410      410              

Flag	Coverage Δ
front	4.83% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rc/applications/opendata/components/TrainDetail.js	0.00% <0.00%> (ø)
.../applications/opendata/views/OpenDataTrainsList.js	0.00% <0.00%> (ø)
...rc/common/RollingStockSelector/RollingStock2Img.js	0.00% <0.00%> (ø)
...rc/common/RollingStockSelector/RollingStockCard.js	0.00% <0.00%> (ø)
...mon/RollingStockSelector/RollingStockCardDetail.js	0.00% <ø> (ø)
...c/common/RollingStockSelector/RollingStockModal.js	0.00% <0.00%> (ø)
...ommon/RollingStockSelector/RollingStockSelector.js	0.00% <ø> (ø)

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[nicolaswurtz]

Great job \o/