[$50] Fix code quality issues from V4 changes

[ThomasKranitsas]

This #30 PR introduced code quality issues that should be fixed.

Most of them are in https://github.com/topcoder-platform/topcoder-react-lib/blob/1e4b154636c86c111b964c0258e6a6706735cf1a/src/services/challenges.js but everything should be checked and fixed.

• Fix eslint issues and revert rules to the default configs
• Fix many typos v3 => v4 in method documentation.
• We use the getApiResponsePayloadV3() method with the response from the V4.
• getApiV3 is defined but never used.
• We defined both this.private.api and this.private.apiV4 as getApiV4(tokenV3). This is confusing.

[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been created for this ticket.

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[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - it has been assigned to thomaskranitsas.

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[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - the new changes has been updated for this ticket.

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[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - the new changes has been updated for this ticket.

This is an automated message for thomaskranitsas via Topcoder X

[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - the new changes has been updated for this ticket.

This is an automated message for thomaskranitsas via Topcoder X

[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - the new changes has been updated for this ticket.

This is an automated message for thomaskranitsas via Topcoder X

[ThomasKranitsas]

Contest https://www.topcoder.com/challenges/30076968 has been updated - the new changes has been updated for this ticket.

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[sushilshinde]

@ThomasKranitsas I did testing today and also reviewed the code. Everything looks fine on beta and test env where I deployed the code.

https://beta-community-app.topcoder.com/challenges
https://test-community-app.topcoder-dev.com/challenges
With this dependency

topcoder-react-lib": "git+https://github.com/topcoder-platform/topcoder-react-lib.git#code-quality-fixes

I'll merge PR tomorrow morning and we can do npm publish tomorrow. I still want to test app few more times.

[sushilshinde]

Improvement suggestions

@ThomasKranitsas I saw some opportunities where we can make some more generic changes.

1. I think this whole thing can be rewritten using API factory function. And usage will be like

const { getApi } = services.api;
const api = getApi(version='V4',tokenV3)

This might need change on the community app side but it will generic for next versions.

2. I think we should remove every mention of v4 from the docs, there are many places where there is v4. Probably in a month or two, we will be launching v5
   https://github.com/topcoder-platform/topcoder-react-lib/pull/33/files search for v4

[ThomasKranitsas]

@sushilshinde can you elaborate on req. 2?