FIX remove web ui config in values.yaml

[washanhanzi]

What was changed

1. remove web ui config in values.yaml
2. remove web config volume in web-deployment.yaml
3. remove web-config config map
4. remove line 280 since the install bash didn't configure web ui auth
5. update the document for web ui configuration with env variable

Why?

#393

Checklist

1. Closes #393

2. How was this tested: manually, 100% craft by hand. since the repo didn't provide any testing tool.

3. Any docs updates needed? already updated with the PR.

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[samm-git]

+1, spent ~hour trying to understand why OID does not work when finally found that config map is not mounted to any volume/file.

[joshbranham]

Can we get this merged? Also just spent a ton of time on auth that wasn't necessary.

[washanhanzi]

@tsurdilo

[kamelj]

I can't understand why this was not merged; we all suffered when we tried to change the web values, and nothing was affected!

[washanhanzi]

@robholland

[washanhanzi]

All done. By the way, is there any test I can run? The PR has been open for a really long time, and I haven't touched the temporal charts since then. I'm not as confident as I was when I submitted the PR.

[robholland]

Nothing automated. We internally use the helm charts to install the base app, but we don't modify the UI so wouldn't pick up on problems. I'll do a manual test before I merge it though.