feat: menu and footer reworked. 2 new Tasks added to enum TaskName for groupPhase

...a/unipotsdam/gf/modules/journal/service/IJournalImpl.java

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

...mforschen/src/main/java/unipotsdam/gf/taglibs/Footer.java

...orschen/src/main/java/unipotsdam/gf/taglibs/HeadLine.java

...samforschen/src/main/java/unipotsdam/gf/taglibs/Menu.java

...src/main/java/unipotsdam/gf/taglibs/OmniDependencies.java

gemeinsamforschen/src/main/webapp/profile/profile.jsp

gemeinsamforschen/src/main/webapp/project/css/style.css

gemeinsamforschen/src/main/webapp/project/tasks-student.jsp