Create empty title posts
A user is allowed to input any character sequence for the subject of a post, the only restriction seems to be three characters of length. By entering three spaces the post is created and can be accessed directly by its _id_ url, but it won't show up properly in the thread list of the forums since the whitespace characters don't provide any _surface_ for clicking.

A better validation would be to check the length of the subject after removing whitespace from front/tail of user input.
