editorconfig: max line length set

max line length warnings removed
missing Copyright added
useless publics removed
unmaintainable Javadoc tags: @author removed
helper class warnings removed
field default value initialization removed
Multiple warnings removed
pref: checkstyle warnings removed
Checkstyle will fail the build process if it detects violations
switch default cases error logger added

broker/src/main/java/io/moquette/persistence/MemoryMessagesStore.java

@@ -19,16 +19,11 @@ package io.moquette.persistence;
 import io.moquette.spi.IMessagesStore;
 import io.moquette.spi.IMatchingCondition;
 import io.moquette.spi.MessageGUID;
-import io.moquette.spi.impl.Utils;
 import io.moquette.spi.impl.subscriptions.Topic;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import java.util.*;
-import static io.moquette.spi.impl.Utils.defaultGet;
 
-/**
- * @author andrea
- */
 public class MemoryMessagesStore implements IMessagesStore {
 
     private static final Logger LOG = LoggerFactory.getLogger(MemoryMessagesStore.class);

broker/src/main/java/io/moquette/persistence/MemorySessionStore.java

@@ -33,10 +33,6 @@ import java.util.concurrent.BlockingQueue;
 
 import static io.moquette.spi.impl.Utils.defaultGet;
 
-/**
- *
- * @author andrea
- */
 public class MemorySessionStore implements ISessionsStore {
 
     private static final Logger LOG = LoggerFactory.getLogger(MemorySessionStore.class);
@@ -74,7 +70,6 @@ public class MemorySessionStore implements ISessionsStore {
 
     @Override
     public void initStore() {
-
     }
 
     @Override