refactoring: switching to dependency injection and fixing tests

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

gemeinsamforschen/src/main/webapp/project/css/all.min.css

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

gemeinsamforschen/src/main/webapp/project/css/brands.min.css

...insamforschen/src/main/webapp/project/css/fontawesome.css

...mforschen/src/main/webapp/project/css/fontawesome.min.css

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

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

...insamforschen/src/main/webapp/project/css/regular.min.css

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

gemeinsamforschen/src/main/webapp/project/css/solid.min.css

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

...insamforschen/src/main/webapp/project/css/svg-with-js.css

...mforschen/src/main/webapp/project/css/svg-with-js.min.css

gemeinsamforschen/src/main/webapp/project/css/v4-shims.css

...nsamforschen/src/main/webapp/project/css/v4-shims.min.css

...amforschen/src/main/webapp/project/js/overview-student.js

...nsamforschen/src/main/webapp/project/overview-student.jsp

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

...rschen/src/main/webapp/project/webfonts/fa-brands-400.eot