Added Site resource.
Themes can now be added to the system.
Added Snippet resource.
Blocks can display snippets or partials.
Added header/footer content to seeds.
Installed acts_as_taggable_on.
Made Articles taggable.
Installed acts_as_commentable.
Removed Block and Snippet models.
Added Path model.
Revised snippets.
Fixed ActsAsPathable initialization.
Added type queries to Snippet.
Refactored snippet loading and themeing.
Snippet type colleciton refactored.
Partials registed in initializer.
Refactored resource functionality.