Merge branch 'development_master' of https://github.com/juliandehne/fltrail into development_master

...java/unipotsdam/gf/core/management/ContextDataOutput.java

...n/java/unipotsdam/gf/core/management/ContextDataView.java

...c/main/java/unipotsdam/gf/core/management/Management.java

...in/java/unipotsdam/gf/core/management/ManagementImpl.java

...ava/unipotsdam/gf/core/management/project/ProjectDAO.java

...va/unipotsdam/gf/core/management/project/ProjectView.java

...ipotsdam/gf/core/management/project/ProjectView.java.orig

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

gemeinsamforschen/src/main/webapp/core/showProjects.js

gemeinsamforschen/src/main/webapp/core/utility.js

gemeinsamforschen/src/main/webapp/course/js/showProjects.js

...rschen/src/main/webapp/groupfinding/enter-preferences.jsp

...hen/src/main/webapp/groupfinding/js/create-preferences.js

...insamforschen/src/main/webapp/management/join-project.jsp

...forschen/src/main/webapp/management/join-project.jsp.orig

...samforschen/src/main/webapp/management/js/join-project.js

gemeinsamforschen/src/main/webapp/management/js/overview.js