Earlier commit incorrectly implemented navigation link suppression when
only one page present, such that this was never shown. This is now
corrected herein.
The pagination support changed, and as was previously done a few commits
ago for news, I'm trying a similar solution for blogs.
In this case, I'm trying to use the existing custom_index() method we
have and adapt it to properly support pagination in the way we want.
I'm not completely sure this will work, but I think it's at least close.
