Actions CLI - tracer implementation

Just connects the command line 'actions' and 'do' to the apiserver; basic initial CLI implementation
oh, wait, this isn't even listing active actions -- just the list of *possible* actions? the map[string]string makes more sense now, but actually -- please return the results as an array instead? []struct{name,description} sort-of-thing? The current structure wasn't very clear to me on first inspection, at least.