Added MariaDB config parser to properly connect to MariaDB backend for Job...

...SqlDAO

tested against MariaDB 5.5 running in a vagrant.
Inspecting the ivy2 cache, it seems that the mysql-connector-java jar is not so large (~ 1MB) which hardly adds much to the total size. Given the small costs and the fact you can still choose between MySQL and it's simplicity. I suggest just keeping it. @davewgithub