#1#10 I changed the articleManager method in Application.java to show
 only the user loged-in own articles in the page called by the link Your
 Articles. I also added a method in the ArticleDAO to get a List of
 Articles which author is the User loged-in.
 #1 Allowed Article Modification Management
 #4 At this point, Users are allowed to post comments on a given Article.
 Each Commentary has its corresponding Article in its attributes
 Each Article has a List of its corresponding Commentaries
 I managed the delete Article feature in order to delete all the
 corresponding commentaries whenever someone deletes the corresponding
 Article.
 I now need to allow people to modify and delete a given Commentary.
 #4 I added the possibility to modify/delete commentaries.
 Besides, I changed the method modifyArticle which was actually not
 working well. I am now using the update method from the driver which
 gives better results.