Minor - rename LimboPlayer methods + code householding

- Rename *taskId methods to *task to reflect what they handle
- Remove usages of Wrapper where applicable
- Replace some uses of legacy Settings with NewSetting calls

src/test/java/fr/xephi/authme/util/WrapperMock.java

@@ -10,7 +10,6 @@ import org.mockito.Mockito;
 import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.logging.Logger;
 
 /**
  * Class returning mocks for all calls in {@link Wrapper}.
@@ -36,11 +35,6 @@ public class WrapperMock extends Wrapper {
         return instance;
     }
 
-    @Override
-    public Logger getLogger() {
-        return getMock(Logger.class);
-    }
-
     @Override
     public Server getServer() {
         return getMock(Server.class);