Redesign the export/import pages to use Bootstrap components

[MauricioFauth]

No description provided.

[codecov]

Codecov Report

Merging #17203 (360b7e4) into master (4001460) will increase coverage by 0.03%.
The diff coverage is 0.00%.

❗ Current head 360b7e4 differs from pull request most recent head fbd5b0a. Consider uploading reports for the commit fbd5b0a to get more accurate results

@@             Coverage Diff              @@
##             master   #17203      +/-   ##
============================================
+ Coverage     48.37%   48.40%   +0.03%     
  Complexity    16780    16780              
============================================
  Files           578      578              
  Lines         60782    60785       +3     
============================================
+ Hits          29402    29424      +22     
+ Misses        31380    31361      -19     

Flag	Coverage Δ
dbase-extension	48.14% <0.00%> (-0.02%)	⬇️
recode-extension	48.10% <0.00%> (-0.08%)	⬇️
unit-7.2-ubuntu-latest	48.11% <0.00%> (+0.02%)	⬆️
unit-7.3-ubuntu-latest	51.07% <0.00%> (-0.03%)	⬇️
unit-7.4-ubuntu-latest	51.10% <0.00%> (+0.06%)	⬆️
unit-8.0-ubuntu-latest	51.19% <0.00%> (+0.03%)	⬆️

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Impacted Files	Coverage Δ
.../classes/Controllers/Database/ImportController.php	0.00% <0.00%> (ø)
...es/classes/Controllers/Server/ImportController.php	0.00% <0.00%> (ø)
...ies/classes/Controllers/Table/ImportController.php	0.00% <0.00%> (ø)
libraries/classes/Twig/UtilExtension.php	0.00% <ø> (ø)
libraries/classes/StorageEngine.php	64.00% <0.00%> (-5.00%)	⬇️
libraries/classes/Gis/GisMultiPolygon.php	78.04% <0.00%> (-0.82%)	⬇️
libraries/classes/Util.php	53.15% <0.00%> (+0.09%)	⬆️
libraries/classes/Partitioning/Partition.php	25.80% <0.00%> (+8.60%)	⬆️
libraries/classes/Transformations.php	60.60% <0.00%> (+12.62%)	⬆️

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