stop using CDN to pull monaco-editor's loader.js

[starpit]

Fixes #807

[codecov-io]

Codecov Report

Merging #808 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #808      +/-   ##
==========================================
- Coverage   83.36%   83.34%   -0.03%     
==========================================
  Files          99       99              
  Lines        8501     8501              
==========================================
- Hits         7087     7085       -2     
- Misses       1414     1416       +2

Impacted Files	Coverage Δ
app/plugins/modules/editor/lib/edit.js	88.19% <100%> (ø)	⬆️
app/plugins/modules/wskflow/lib/graph2doms.js	62.98% <0%> (-0.82%)	⬇️
app/content/js/repl.js	91.59% <0%> (-0.62%)	⬇️
...ins/modules/activation-visualizations/lib/table.js	95.14% <0%> (+1.42%)	⬆️

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