Merge remote-tracking branch 'origin/pages_overview' into pages_overview

...ava/unipotsdam/gf/core/management/user/HiddenUserTag.java

...rc/main/java/unipotsdam/gf/core/management/user/Menu.java

.../java/unipotsdam/gf/core/management/user/UserService.java

...c/main/java/unipotsdam/gf/interfaces/IPeerAssessment.java

.../modules/assessment/controller/service/FBAssessement.java

...modules/assessment/controller/service/PeerAssessment.java

...es/assessment/controller/service/PeerAssessmentDummy.java

...tsdam/gf/modules/assessment/controller/view/QuizView.java

gemeinsamforschen/src/main/webapp/assets/css/footer.css

gemeinsamforschen/src/main/webapp/assets/css/styles.css

...rschen/src/main/webapp/assets/css/upload-unstructured.css

gemeinsamforschen/src/main/webapp/assets/js/Quiz.js

gemeinsamforschen/src/main/webapp/assets/js/createQuiz.js

gemeinsamforschen/src/main/webapp/assets/js/enrollProject.js

...nsamforschen/src/main/webapp/assets/js/finalAssessment.js

gemeinsamforschen/src/main/webapp/assets/js/footer.js

...samforschen/src/main/webapp/assets/js/overview-student.js

...nsamforschen/src/main/webapp/assets/js/project-student.js

...samforschen/src/main/webapp/assets/js/rateContribution.js

...insamforschen/src/main/webapp/assets/js/specificSkills.js