Fix/improve tutorial

Updating the tutorial with approved content, more styles, and fixing how it adds components to the app.


I'm using them in `intro.js` on lines like [this](https://github.com/mozilla-appmaker/appmaker/pull/2016/files#diff-e708846e6aae9144004a6fc6d69c1f0dR100) to specify that I always want components added to the end of the card. Otherwise FF and Chrome actually inserted components in different orders, which made positioning tooltips difficult. 

I'll rename to options.