Revert "Use Cue API for saves"

[rpoet-ds]

Reverts #378

Was not deployed, so reverting this PR so master contains what is in PROD.

[codecov]

Codecov Report

Merging #380 (96f6f5f) into master (1448d93) will decrease coverage by 0.0%.
The diff coverage is 100.0%.

@@           Coverage Diff            @@
##           master    #380     +/-   ##
========================================
- Coverage    99.9%   99.9%   -0.0%     
========================================
  Files          90      88      -2     
  Lines        2663    2620     -43     
  Branches      647     654      +7     
========================================
- Hits         2660    2617     -43     
  Misses          3       3             

Impacted Files	Coverage Δ
src/indexLibrary.ts	100.0% <ø> (ø)
src/subtitleEdit/CueListToolbar.tsx	100.0% <ø> (ø)
src/subtitleEdit/SubtitleEdit.tsx	100.0% <ø> (ø)
src/subtitleEdit/cues/cuesList/CuesList.tsx	100.0% <ø> (ø)
src/subtitleEdit/cues/cuesList/cuesListSlices.ts	100.0% <ø> (ø)
src/subtitleEdit/cues/edit/CueEdit.tsx	100.0% <ø> (ø)
src/subtitleEdit/model.ts	100.0% <ø> (ø)
src/subtitleEdit/subtitleEditReducers.ts	100.0% <ø> (ø)
src/subtitleEdit/CompleteButton.tsx	100.0% <100.0%> (ø)
src/subtitleEdit/cues/cuesList/cuesListActions.ts	99.8% <100.0%> (-<0.1%)	⬇️
... and 6 more

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