DB files removed from tracking! Admin files merged into blog.
Updated blog models to be able to handle comments. Removed pluralization from model class names.
Basic comment *display* functionality added.

Blog model backreferences made less incorrect.

The fragile SQLAlchemy-object-to-dictionary mapper function removed in favor of letting the blog template parse the db objects directly.
Comments ordered by date, internal method made static
Placeholder for comment posting added
VtP version 111b added.