sample "30 - MVC Server" will now handle tags (categories) for articles
  *  tags are stored as a dynamic array of integers within TArticle.Tags, without any pivot table
  *  tags are displayed as text, in alphabetic order
  *  performance of the BLOG engine is awsome: if you create 200,000 fake blog articles and 400,000 comments (written in less than 10 seconds in the SQLite3 DB), the web application works without any slow down, including tag search, and simple paging - a WordPress administrator would start to cry :)