New mechanism to generate buffered content (Work in process)

Signed-off-by: Eduardo Silva <edsiper@gmail.com>
Rework, check commit details

 - All posts/articles are located after first URI slash
 - Add support of SQLite database and basic schema to maintain
   a persistent lists of post that the blog have, this is not
   mandatory but useful for feeds generation and others
 - new bladmin tool to insert posts into the system

Signed-off-by: Eduardo Silva <edsiper@gmail.com>