Document remaining tasks for addressable blocks.
* Show toolbar when viewing content blocks as pages.
* Remove Obsolete views for content library.
* Remove unnecessary template_directory used to look up block views and rely on core Rails view overriding. This may have been necessary in early rails 2 implementations.
* #show works with both slug and id.
* Merged the functionality of #view_as_page into #show.
* Add 'Preview' button for blocks to show the proper URL for viewing the content.
* Display the contents of a blocks 'render.html.erb' when they are displayed as pages.
* All section_nodes have an optional slug attribute. Blocks are looked up by slug/class. This eliminates the need to modify all content block tables.
Automatically add routes for each addressable content block.
* Generate a new section when adding the first item of content (rather than as a seed)
* Show content blocks that don't have a parent page using the previous view.