TASKMAN-31: When creating a new task, there is no reporter displayed

Hi, 
to display the reporter in new task page, you can modify the TaskManager.TaskManagerSheet document. In edit mode you can replace <code>$doc.display('reporter')</code> by :
<code>#if($doc.isNew())</code>
   <code>   #set($obj = $doc.getObject("TaskManager.TaskManagerClass"))</code>
   <code>   #set($discard = $obj.set("reporter",$context.getUser()))</code>
   <code>   $obj.get("reporter")</code>
<code>#else</code>
   <code>   $doc.display('reporter')</code>
<code>#end</code>