[change] Switched to prettier

[youhaveme9]

Checklist

• I have read the OpenWISP Contributing Guidelines.
• I have manually tested the changes proposed in this pull request.
• I have written new test cases for new code and/or updated existing tests for changes to existing code.
• I have updated the documentation.

Reference to Existing Issue

Closes #367

[coveralls]

coverage: 96.18%. remained the same
when pulling efc11db on youhaveme9:issues/367-switch-to-prettier
into 1103df5 on openwisp:master.

[nemesifier]

Looks good, I am testing.
We will need to update this page too:
https://openwisp.io/docs/dev/developer/contributing.html#javascript-code-conventions

We need to update the javascript code conventions section and add a new section for CSS.

This is the file that needs to be edited:
https://github.com/openwisp/openwisp-docs/blob/master/developer/contributing.rst

[nemesifier]

Testing the changes on OpenWISP Controller:
openwisp/openwisp-controller#969.

[youhaveme9]

Looks good, I am testing. We will need to update this page too: https://openwisp.io/docs/dev/developer/contributing.html#javascript-code-conventions

We need to update the javascript code conventions section and add a new section for CSS.

This is the file that needs to be edited: https://github.com/openwisp/openwisp-docs/blob/master/developer/contributing.rst

PR incoming!

[youhaveme9]

Hey @nemesifier
Should we combine the CSS and JS section in the docs in one single section as prettier is used for both?

[nemesifier]

Hey @nemesifier Should we combine the CSS and JS section in the docs in one single section as prettier is used for both?

I think in this case is ok to combine them since we use one tool for both.

[youhaveme9]

Hey @nemesifier Should we combine the CSS and JS section in the docs in one single section as prettier is used for both?

I think in this case is ok to combine them since we use one tool for both.

openwisp/openwisp-docs#217