changed method names from create() and store() to fromXML() and toXML().
implemented parts of these methods.
Modified Files:
src/java/de/fhworms/ztt/ox/campusdatarepository/CourseCatalog.java
src/java/de/fhworms/ztt/ox/campusdatarepository/StudentCatalog.java
src/java/de/fhworms/ztt/ox/core/Answer.java
src/java/de/fhworms/ztt/ox/core/Course.java
src/java/de/fhworms/ztt/ox/core/Exam.java
src/java/de/fhworms/ztt/ox/core/ExamParticipant.java
src/java/de/fhworms/ztt/ox/core/ListFactory.java
src/java/de/fhworms/ztt/ox/core/Problem.java
src/java/de/fhworms/ztt/ox/core/Student.java
src/java/de/fhworms/ztt/ox/examrepository/ProblemCatalog.java
src_test/java/unit/de/fhworms/ztt/ox/campusdatarepository/CourseCatalogTest.java
src_test/java/unit/de/fhworms/ztt/ox/campusdatarepository/StudentCatalogTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/AnswerTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/CourseTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/ExamParticipantTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/ExamTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/ListFactoryTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/ProblemTest.java
src_test/java/unit/de/fhworms/ztt/ox/core/StudentTest.java
src_test/java/unit/de/fhworms/ztt/ox/examrepository/ProblemCatalogTest.java
