You see, sublime text is a software with elegance.
The site is with elegance, but not the forum.
The forum is too ugly, discordant. Not in Sublime-text's style!
I suggest you to put a disqus in forum/index.html page and everything done.
With out managing database. With out running own php, the site can be fully static, it saves a lot, too.
The most important thing is: it is more beautiful.
Written and posted in this ugly page, feeling unpleasant.