PodToHtml: generate a title from the filename if one isn't given
PodToHtml: generate a title from the filename if one isn't given

We depend on a title being present when we list it in index files,
otherwise the file shows up as the empy string. This generation code
isn't meant to be perfect; it just provides a more useful default than
'untitled' or ''.

parrot/parrot,FROGGS/parrot,tkob/parrot,gitster/parrot,FROGGS/parrot,tkob/parrot,youprofit/parrot,tkob/parrot,youprofit/parrot,parrot/parrot,FROGGS/parrot,youprofit/parrot,youprofit/parrot,FROGGS/parrot,parrot/parrot,gitster/parrot,youprofit/parrot,FROGGS/parrot,parrot/parrot,tkob/parrot,tkob/parrot,FROGGS/parrot,gitster/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,gitster/parrot,FROGGS/parrot,tkob/parrot,FROGGS/parrot,gitster/parrot,gitster/parrot,gitster/parrot,youprofit/parrot,tkob/parrot,youprofit/parrot