Audit panels instrumentation for production usage

[tim-schilling]

We should audit each panel for how early they start instrumenting their areas and determine if the toolbar can reliably be installed in a production environment, but disabled via SHOW_TOOLBAR_CALLBACK. This is in reference to #1375.

We would want know the following for each of the panels:

• Does the panel set up its instrumentation on project start or on enable_panel?
• Can the instrumentation be disabled entirely?
• Does the instrumentation monkeypatch something?

To conclude this effort, we should document the findings on a new documentation page for production use. If this means we provide a configuration setting that has the non-production friendly panels excluded, that would be great.

[jmgutu]

I would like to review the code and document the findings for each panel.