Refactored more into the main code (so it can render and be cached inline)
Added article border and legal text
Simplified version of xexpr->string that doesn't encode html entities O:)
Render within a plugin should have access to other plugins
A fair bit of refactoring on nested categories

- Split the functions that add subcategories and post listings
- Rewrite arguments so they can be either keywords or not
- Generate category lists after everything is done
- Probably other things