Adding visited class to topic-details instead of just topic-title

[angus (Angus McLeod)]

@andrewroth

Any suggestions on how to approach this would be very welcome. Thanks!

I wrote a brief overview for this purpose. Thanks for your PR for Topic List Previews, I’ll review it later today.

How to start building stuff for Discourse if you're newbie (like myself)

There are a few ‘how to start’ guides for working with Discourse already and a wealth of useful info on meta, but I thought it might help to give an insight to the mental processes of starting from little, if any, prior coding experience to building substantial Discourse plugins. Discourse is written by experienced developers and has a large codebase. This can feel intimidating. This intimidation factor can be a significant barrier for novice developers. This is a kind of ‘psychological primer’…