This adds the function getPubDate() to book.php, which
returns either the publication year, or "", if the value is null or
"Undefined". By "Undefined", I mean the value Calibre sets as pubdate when
you choose "Undefined" in the GUI. which is 1 Jan 0100, or -58979926800.
Fix whitespace
Add a new string for the pubdate
Fix strings ... (silly me)
Update OPDS feed to use the new method getPubDate
don't print "Languages" if there are none defined.
Fix whitespace
Don't print the tags if there's no tags. Based on a patch by Tyler J. Wagner