Cannot refine server.

Sorry about extra opps commit, I don't known how it happened. :|
If the server/plugin is reloaded ([this will probably not possible](http://forums.spongepowered.org/t/plugin-reloading-enabling/684?u=minecrell) then the classes should be also reloaded. It is not really safe to use the same instance of the server over plugin reloads.