feature #907 sprint5 :
Now, a moderator (a publisher) can list all the suggestions awating its validation. Among these suggestions, those that were refused are also listed
in last positions of the list. The list is paginated and can be sorted by some of the suggestion characteristics.
The suggestionList.jsp JSP page is reused for this list.
Add icons indicating some of the status of a suggestion (refused, published/validated, and in pending validation).
Fix a bug when validating or refusing a given suggestion from the suggestionView.jsp JSP page (the suggestion wasn't correctly converted
into a Suggestion object after its fetching from the web service).