Improves javadoc in more than 190 classes

This commit improves and adds missing javadoc to 196 java files. Now
more than 98% of the code is documented.

src/main/java/com/l2jserver/service/game/character/CharacterAlreadyWalkingServiceException.java

@@ -23,5 +23,7 @@ package com.l2jserver.service.game.character;
  */
 public class CharacterAlreadyWalkingServiceException extends
 		CharacterServiceException {
-	private static final long serialVersionUID = 1L;
-}
+	/**
+	 * The Java Serialization API serial
+	 */
+	private static final long serialVersionUID = 1L;}