5211 tests arent using source maps master

[scottbell]

Closes #5211

Describe your changes:

This gets us closer to what we want with retaining line numbers:

1) uses source maps properly
     The Annotation API
     Error: Do source maps works
    at AnnotationAPI.fail (webpack-internal:///./src/api/annotation/AnnotationAPI.js:214:11)
    at UserContext.eval (webpack-internal:///./src/api/annotation/AnnotationAPISpec.js:95:35)
    at <Jasmine>

though per the docs, it can be a bit flaky still.

I also simplified the config a bit. We had an extra babel config file that didn't seem to need to exist outside the webpack coverage config.

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Author Checklist

• Changes address original issue?
• Unit tests included and/or updated with changes?
• Command line build passes?
• Has this been smoke tested?
• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Changes appear not to be breaking changes?
• Appropriate unit tests included?
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• Commit messages meet standards?
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• Has associated issue been labelled bug? (only applicable if this PR is for a bug fix)

[codecov]

Codecov Report

Merging #5566 (9c54a9f) into master (c83ee95) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head 9c54a9f differs from pull request most recent head 7b88655. Consider uploading reports for the commit 7b88655 to get more accurate results

@@           Coverage Diff           @@
##           master    #5566   +/-   ##
=======================================
  Coverage   53.63%   53.64%           
=======================================
  Files         594      594           
  Lines       21762    21762           
  Branches     2047     2047           
=======================================
+ Hits        11673    11674    +1     
+ Misses       9516     9514    -2     
- Partials      573      574    +1     

Flag	Coverage Δ		*Carryforward flag
e2e-ci	39.50% <ø> (+0.01%)	⬆️	Carriedforward from 029605e
e2e-full	48.81% <ø> (ø)		Carriedforward from 029605e
e2e-stable	47.48% <ø> (ø)
unit	50.11% <ø> (+0.01%)	⬆️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
...ettingsSynchronizer/URLTimeSettingsSynchronizer.js	96.96% <0.00%> (-1.02%)	⬇️
src/plugins/gauge/components/Gauge.vue	61.72% <0.00%> (-0.62%)	⬇️
...c/plugins/persistence/couch/CouchObjectProvider.js	80.00% <0.00%> (+1.01%)	⬆️

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