Display old posts by adding blog with pagination

[sGerli]

Fix for #54

[sGerli]

Blog page index: /blog
Blog page full URL /blog/:page
Pagination preview:

I think this PR is done. But I wouldn't merge until the new home screen is live because the home page and the blog index are the same.

[ishotjr]

This is excellent - thank you so much! Would it be possible to split it into two parts though - add pagination to home now to close this issue, and then move everything to /blog separately in support of #56 ? In addition to the redundancy that you mentioned, adding blog to the nav causes it to wrap, which is something we can deal with later - but just adding the pagination to / would be a huge win that we can roll out immediately! 😍

[sGerli]

I tried but it seems like Jekyll pagination (at least the method I'm trying) doesn't work on root /.

[sGerli]

Superseded by #59