Disable embedded sample web app by default

[ptitzler]

Currently the MAX microservice exposes a mini sample app by default, which is great for demo/exploration purposes but not so much for production-ish use. We might want to consider changing the default behavior to mirror other optional features, such as CORS support (disabled by default)

[ajbozarth]

Closing this since changes to the implementation have removed both ability to toggle the app on and off as well as the reason to. Specifically the current implementation always includes the web app in the docker build whether or not it was enabled, so with the move to the max framework the ability to disable it was removed.