Merge latest from lyft-release-sp8

[DiggidyDave]

feat: Scheduling queries from SQL Lab
feat: view presto row objects in data grid (apache#7436)

[codecov-io]

Codecov Report

Merging #26 into lyft-develop will decrease coverage by 0.03%.
The diff coverage is 52%.

@@               Coverage Diff                @@
##           lyft-develop      #26      +/-   ##
================================================
- Coverage            65%   64.96%   -0.04%     
================================================
  Files               429      430       +1     
  Lines             21095    21164      +69     
  Branches           2337     2342       +5     
================================================
+ Hits              13712    13750      +38     
- Misses             7259     7290      +31     
  Partials            124      124

Impacted Files	Coverage Δ
...src/components/FilterableTable/FilterableTable.jsx	91.01% <ø> (ø)	⬆️
.../assets/src/SqlLab/components/QueryAutoRefresh.jsx	11.9% <0%> (-0.92%)	⬇️
superset/views/sql_lab.py	94.64% <100%> (ø)	⬆️
superset/assets/src/featureFlags.ts	88.88% <100%> (+13.88%)	⬆️
...sets/src/SqlLab/components/ScheduleQueryButton.jsx	13.33% <13.33%> (ø)
...uperset/assets/src/SqlLab/components/SqlEditor.jsx	59.8% <50%> (-0.2%)	⬇️
superset/db_engine_specs.py	61.45% <86.11%> (+1.22%)	⬆️

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