Beminfo 379

* Implement autonomic lunch for bem-site engine
* Fix some issues for data compiling
* Implement model with autors and tags for demonstrating features of bem-site-engine
* Add stub model structure for bem-site-engine documentation
* Implement documentation for bem-site-engine configuration

@tadatuta @dab @tavriaforever
теперь здесь стоит написать внешние gh-аккаунты