Merge branch 'development_master' into development_master_refactoring_1

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

...va/unipotsdam/gf/core/management/pageAppearance/Menu.java

.../unipotsdam/gf/core/management/pageAppearance/footer.java

...nipotsdam/gf/core/management/pageAppearance/headLine.java

...m/gf/core/management/pageAppearance/omniDependencies.java

...n/java/unipotsdam/gf/core/management/project/Project.java

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

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

...n/src/main/java/unipotsdam/gf/core/states/PhasesImpl.java

...rc/main/java/unipotsdam/gf/core/states/PhasesService.java

...src/main/java/unipotsdam/gf/core/states/ProjectPhase.java

...main/java/unipotsdam/gf/core/states/configPhaseShift.java

...chen/src/main/java/unipotsdam/gf/interfaces/Feedback.java

...chen/src/main/java/unipotsdam/gf/interfaces/IJournal.java

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

...am/gf/modules/assessment/controller/model/Categories.java

...m/gf/modules/assessment/controller/model/Performance.java

...essment/controller/service/AssessmentDBCommunication.java

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

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