[TASK] Switch from yarn to npm

[eliashaeussler]

This PR changes the underlying frontend project to use npm instead of yarn.

[codeclimate[bot]]

Code Climate has analyzed commit 874dfe4a and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 91.2% (0.0% change).

View more on Code Climate.

[coveralls]

Pull Request Test Coverage Report for Build 10195494920

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.224%

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Totals
Change from base Build 10195456693:	0.0%
Covered Lines:	1081
Relevant Lines:	1185

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💛 - Coveralls