Merge pull request #95 from shooly/master

Thanks goes to @shooly for corrections. Changes with messages and MySQL port.
Merge pull request #96 from shooly/master

Thanks again to @shooly for required items improvement.
Merge pull request #97 from shooly/master

Thanks to @shooly for Small bugfix related to guild members and events.
Merge pull request #98 from shooly/master

Made plugin possible to compile with Java 1.6.
I changed a little bit condition where plugin loads required items to avoid OutOfBoundException.
Added missing message