Improve source list and detail, adding info panel

[CFarcy]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (master@bbc659e). Click here to learn what that means.

❗ Current head d327daf differs from pull request most recent head 442ad74. Consider uploading reports for the commit 442ad74 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #488   +/-   ##
=========================================
  Coverage          ?   95.17%           
=========================================
  Files             ?       80           
  Lines             ?     2903           
  Branches          ?        0           
=========================================
  Hits              ?     2763           
  Misses            ?      140           
  Partials          ?        0           

Flag	Coverage Δ
backend-unittests	95.17% <100.00%> (?)

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