Create objects using builder pattern in PDFTest.
Removed unused imports in CSVTest.
Add comment to PDFTest that explains that it does not contain any JUnit
tests.
Moved code into try block in PDFTest.
Added parent's name to the salutation text.
Changed expected parameters of createSecondDunning.
Adapted new way of createSecondDunning call in PDFTest.
Added parent object to student in PDFTest.
Removed unused import in PDFDunning.
replaced grade.getGrade() + grade.getSuffix by grade.toString() in PDF
classes.
Removed unnecessary comments.
Added code to test the printing of lendingList and returnList.
Added maps to PDFStudentList to map lendingLists and returnLists to the
correct student.
Adapted PDFTest.
Merge pull request #234 from B3nRa/issue#227#229

Made major changes to PDFStudentList and PDFTests - Issue#227#229