add page titles

apps/threads.lua

@@ -22,6 +22,7 @@ app:get("thread_create", "/create", function(self)
     return "how did you get here?"
   end
   self.all_topics = all_topics
+  self.page_title = "creating thread"
   return {render = "threads.create"}
 end)
 
@@ -91,6 +92,9 @@ app:get("thread", "/:slug", function(self)
   self.topic = Topics:find(thread.topic_id)
   self.user = util.get_logged_in_user_or_transient(self)
   self.posts = posts
+  
+  self.page_title = thread.title
+  
   return {render = "threads.thread"}
 end)