Editor and save state tweaks

[apedroferreira]

Implements PR feedback from #861.
No debug logs, no color in logs, less log messages, no hiding of save state icon
Also adjusted a section title in the page properties editor, to improve consistency with changes in the component properties editor.

[render]

Your Render PR Server URL is https://toolpad-pr-879.onrender.com.

Follow its progress at https://dashboard.render.com/web/srv-cc8bcssgqg45uliu6ao0.

[apedroferreira]

The console logs are making the CI tests fail. Any suggestions since we don't use the env variable?
Should i try to disable console logs in tests?

Edit: disabling logs in tests would probably not be good, I've added a check for the test environment around the log

[Janpot]

The console logs are making the CI tests fail.

Only the use of console.error should make it fail at the moment. In general, we should avoid these sort of checks for test env in the app. There is no reason why the integration test should fail on this, so if the log is a problem for the current tests, then the tests need to change, not the app.

edit: btw, There is an ignore list for logs in the tests, but it doesn't matter here, because the tests shouldn't break on the use of console.log

[apedroferreira]

sounds good i probably misunderstood why the ci failed then

[Janpot]

creating #881 for more insight in these messages

[apedroferreira]

creating #881 for more insight in these messages

it just passed now without any new changes, not sure what had happened before, it did say something about console logs