update deps, fix types, fix circle build cache key etc.

Codecov Report

Merging #1214 (1c82ddd) into master (29b9ede) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1214   +/-   ##
=======================================
  Coverage   64.23%   64.23%           
=======================================
  Files         124      124           
  Lines        5318     5318           
  Branches     1234     1234           
=======================================
  Hits         3416     3416           
  Misses       1773     1773           
  Partials      129      129

Flag	Coverage Δ
backend	`64.23% <ø> (ø)`

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Impacted Files	Coverage Δ
backend/api/routes/storedData.ts	`97.67% <ø> (ø)`
backend/graphql/Exercise.ts	`63.04% <ø> (ø)`

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rage / mooc.fi

update deps, fix types, fix circle build cache key etc. #1214

Codecov Report