Mysql-replication

* fk removed

- Documentation update
- MySQLRepository and BinLogSocketConnect extract to interfaces
- BinLogSocketConnect exception set as const
- register slave use now hostname and port to be correct display in "SHOW SLAVE HOSTS"
- dbname removed from configuration as is no more in use
- added foreign keys info to events

- json decoder 16/32 int support

- fix for json decode
- table cache option moved to config
- strict varibles

- basic implemetation of json binary encoder for mysql 5.7
- config now support ip and host setting
- connection_id correctly decoded
- events dispach now can work with 2.8 lib
- some code cleanup
- added new tests