added hook for peer assessment

gemeinsamforschen/modellierung/activities_dehne.vsdx

...c/main/java/unipotsdam/gf/config/GFApplicationBinder.java

...in/java/unipotsdam/gf/process/DossierCreationProcess.java

...ain/java/unipotsdam/gf/process/GroupFormationProcess.java

...ain/java/unipotsdam/gf/process/PeerAssessmentProcess.java

...schen/src/main/java/unipotsdam/gf/process/tasks/Task.java

...n/src/main/java/unipotsdam/gf/process/tasks/TaskName.java

gemeinsamforschen/src/main/webapp/project/js/tasks.js

...rschen/src/test/java/unipotsdam/gf/SurveyPreparation.java

...st/java/unipotsdam/gf/modules/assessment/HashMapTest.java

...a/unipotsdam/gf/modules/assessment/TestAddAssessment.java