Fixed MailList.xsd
Finalized variables.
Updated to enhanced switch.

Added new fluent API for configurations.
Ported all to SLF4J.
Refactored package structure.
Using Maven.
Adding SQL scripts to cut all dependency with L2J DataPack.
Fixing database charset:
https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434
Removing unnecessary exception from log.
Moving around common code.