Added a transient "message" property to the TaskFormProcessor, this returns the default (No Message) value if the user did not enter a description when starting the workflow.
Changed all task forms to use the new "message" property instead of bpm:description.
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@22384 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261