More Tweaking

I wasn't happy with the way the front and category pages have been displaying (with a headline and a "Read More" link. Went poking through the code again and have figured out something called an "excerpt," which is now configured to appear as a subhead. When creating posts, there's a field for a subhead - filling that out will now get it to appear on the main page and category pages. 

Not all of the posts have an excerpt in them yet, but we'll gradually build them in.