Twenty Nineteen: Add archive descriptions

[laurelfulford]

Originally reported by @dannycooper in Twenty Nineteen's GitHub repo:

Archive descriptions weren't originally included in the theme's design, but it's been suggested they be added now.

@kjellr created a mockup of what they should look like.

Original issue here: ​https://github.com/WordPress/twentynineteen/issues/256

[laurelfulford]

Twenty Nineteen - mockup of placement for archive description.

[manzoorwani.jk]

Descriptions that are more than 1 or 2 lines may not fit well in the layout presented in the mockup.

[poena]

Since many years have passed since the theme was introduced, should this be added but as an optional setting, not enabled by default?

Or, the ticket could be closed as wontfix, as changing the design now may be unexpected.

[karmatosed]

My feeling @poena is that right now closing this makes sense. I am going to cautiously put a 'close' keyword on to allow space for feedback but encourage that state. I agree that too much time has passed to add an optional setting, coupled with the fact that currently fixing bugs in default themes is the priority - it feels like we shouldn't do this. Of course, if others feel differently we can consider it.

[karmatosed]

I am going to follow through in closing this today, thank you everyone for the collaboration here.