Report to server when download stops

[thornbill]

Reports when a download stops (completes or errors out) so the server can remove the transcode files.

[codecov[bot]]

Codecov Report

Merging #408 (81a35da) into master (e6b31c6) will decrease coverage by 0.32%. The diff coverage is 30.00%.

:exclamation: Current head 81a35da differs from pull request most recent head da1c826. Consider uploading reports for the commit da1c826 to get more accurate results

@@            Coverage Diff             @@
##           master     #408      +/-   ##
==========================================
- Coverage   60.53%   60.21%   -0.33%     
==========================================
  Files          46       46              
  Lines         935      945      +10     
  Branches      187      189       +2     
==========================================
+ Hits          566      569       +3     
- Misses        336      341       +5     
- Partials       33       35       +2     

Impacted Files	Coverage Δ
App.js	0.00% <0.00%> (ø)
models/DownloadModel.ts	100.00% <100.00%> (ø)
stores/RootStore.js	100.00% <100.00%> (ø)

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[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication