All NPM plugins

[christianlupus]

This should add two plugins to the build chain.

• The clean plugin will tidy up the js folder on each build.
• The mini-css-extractor will build a dedicated CSS file to enhance load speed.

[codecov]

Codecov Report

Merging #868 (e176a1d) into master (04e34b3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #868   +/-   ##
=======================================
  Coverage   21.22%   21.22%           
=======================================
  Files          20       20           
  Lines        1555     1555           
=======================================
  Hits          330      330           
  Misses       1225     1225           

Flag	Coverage Δ
integration	7.07% <ø> (ø)
unittests	14.14% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[github-actions]

Unit Test Results

  22 files    22 suites   8m 34s ⏱️
  66 tests   66 ✔️ 0 💤 0 ❌
726 runs  726 ✔️ 0 💤 0 ❌

Results for commit e176a1d.

♻️ This comment has been updated with latest results.