Update checkstyle config and CodeClimate exclusions

- Add new checkstyle checks: require Javadoc on large private methods, default in switch, declaration order & others
- Update path exclusions in CodeClimate config to match newly renamed classes (e.g. PHPBB -> PhpBB)
  - Create consistency check testing that excluded paths exist as classes
- Fix some trivial violations

src/main/java/fr/xephi/authme/permission/AuthGroupHandler.java

@@ -79,8 +79,8 @@ public class AuthGroupHandler implements Reloadable {
                 throw new IllegalStateException("Encountered unhandled auth group type '" + groupType + "'");
         }
 
-        ConsoleLogger.debug(
-            () -> player.getName() + " changed to " + groupType + ": has groups " + permissionsManager.getGroups(player));
+        ConsoleLogger.debug(() -> player.getName() + " changed to "
+            + groupType + ": has groups " + permissionsManager.getGroups(player));
     }
 
     /**