Make the featured-series tags more permanent

[rtyler]

@kylegordy I was thinking about featured-series and I think to make a "related content" widget work long-term, we would be better served by having blog posts in a series share the same featured-series tag.

For example:

• featured-weaver
• featured-aws-migration

Then the hero on the home page could just be a config value stating which featured series to use, but the posts would be immutable, so the related content widget we discussed would always work.

Whatcha think?

[kylegordy]

@rtyler I think that would work well. That way the series groupings stay together as you mentioned.

I'll try to get a related content module sorted out before Thanksgiving so we can play around it. I imagine this approach will make for better recommendations long-term

[kylegordy]

@rtyler I made featured series tags unique a few days ago. I think we can close this now 😄