- removed StudentHandler.createStudentObject
- refactored method -> techer : teacher
- changed Student creation in gradeTest to builder creation
- changed Student creation in PDFTest to builder creation
- fixed studenttest (date format is correct now)
- removed GradeHandler.createObject
- replaced grade creation in MyCSVHandler with builder call
- renamed "Religionsunterricht" to "Religion"
- removed splittedChars method in MyCSVHandler
- removed unused import in ProfileTypeHandler
- replaced teachingMaterial creation in gradeTest with builder creation
- deleted TeachingMaterialHandler class