Create displaypost.html

I have been having some very odd troubles with github over the past few hours and cannot find most of the other files in the project. As a result, there is no code accessing real post data, and the page looks rather bare. Basically this file needs a bit more work.
Also, the img element currently doesn't have src attribute and may render oddly in some browsers; can we come up with a default item picture (Exeter seal, gray box, etc.)?