Message to be an attachment

[darrenmoore]

• [x] Messages to be attachments
• [x] Remove response simulated typing, should be in clients
• [x] Remove mentions of fast in code
• [x] Remove mentions of fast in docs
• [x] Move templating to attachments, from response

Why Keeps it standard and decentralises gi to not only handle and reply to messages. Possibly reducing risk of bugs when no messages sent and only other attachments.

What Request.reply / return method value maps to add attachment method. If the return method is bool then no need to add attachment.

Is request key type=message required? Maybe it should just return data?

Also update all other clients to handle this.

[darrenmoore]

Also recode response.js and break it down into smaller parts.

[darrenmoore]

https://github.com/GoodIntentionsAssistant/gi/commit/70e0c6f462c146209bfab4dcf48a059bf4d394fb