Restrict commands we don't support yet in the CLI

[faassen]

We have a bunch of half-baked commands that don't work fully yet and that we won't support yet in the first release. I think the simplest way to go about this is to remove them for now, given that they're easy to add back when we get to it.

[b5]

Fully agreed. Let's remove anything that isn't intended to be polished up for a release. We have git history if we'd like to resurrect