Fix typogrifying objects without title
Fix typogrifying objects without title

This fixes my use case where I use `readers.read_file` from within plugin to load something that is neither a page nor an article.

Rogdham/pelican,farseerfc/pelican,Scheirle/pelican,Scheirle/pelican,Scheirle/pelican,ehashman/pelican,ehashman/pelican,iKevinY/pelican,Rogdham/pelican,zackw/pelican,lucasplus/pelican,talha131/pelican,ingwinlu/pelican,farseerfc/pelican,lucasplus/pelican,douglaskastle/pelican,ehashman/pelican,douglaskastle/pelican,getpelican/pelican,iKevinY/pelican,zackw/pelican,avaris/pelican,getpelican/pelican,avaris/pelican,Rogdham/pelican,ingwinlu/pelican,zackw/pelican,lucasplus/pelican,talha131/pelican,douglaskastle/pelican