Keep track of the person who requested moderation
keep track of the person who change the status

* Add new field "authorStatus"
* update author Status in all emplacement where the status is changed
keep track of the person who change the status

* Class "PublicationWorkflowClass" with new property "statusAuthor"
* Change "authorStatus"  by  "statusAuthor"
keep track of the person who change the status

* corrected the class formatting
keep track of the person who change the status

* corrected the class formatting
Merge pull request #12 from zoubir/master

Add the ability to keep track of the person who last changed the status.