always feed user info into Vision's .view context

server.js

server.ext('onPreResponse', (request, reply) => {

    const response = request.response;
    if (response.variety && response.variety === 'view') {
        response.source.context = response.source.context || {};
        if (request.auth.isAuthenticated) {
            response.source.context.user = {
                name: request.auth.credentials.name
            };
        }
    }
    return reply.continue();
});