bug/suggestion: remove 'more articles' column if only one post featured

We only have one article we want to feature on the front page, so select 1 in the dropdown. However, the ‘more articles’ still shows up. I think it should be hidden, but it seems to be hard coded in.

Also, the number of words shown for the featured article seems to be hard-coded in. Wouldn’t it be more flexible/useful to use the excerpt (or at least have the option to do so)?