Updating the tutorial for Lucky 1.5.0

[jwoertink]

Fixes #1535

There's quite a few outdated things in the guides. I'm trying to stick mostly to the tutorial, but a few links in the tutorial go to other pages with bad information, so I've lumped a few of those in too.

Also, originally I went with Bootstrap in order to add in some styled components and baked in javascript stuff.... I'm playing around with changing that to something a little more lightweight just for the sake of simplicity.

[wout]

Slightly unrelated, there's one thing about the tutorial that I frequently run into. If you use the search (Avram stuff for example), often you land on the tutorial, which is a bit confusing.
I wonder if the tutorial could be filtered out, or could get a lower priority in the search or something.

[jwoertink]

I wonder if the tutorial could be filtered out, or could get a lower priority in the search

That's an interesting thought. I'll need to see how we can configure that, but it makes sense. You shouldn't really need to search stuff in the tutorial.

[jwoertink]

For the algolia search, I just logged into the account and set an exclusion rule for /tutorial. We'll see how that works out.