check if entries are NULL, make sure all sections of the json are correctly set even if data is missing

[wow-such-code]

barcode-dragon-portlet/src/main/java/life/qbic/portal/portlet/io/BarcodeCreator.java

Line 446 in 735d1ba

inv.put("title", investigator.getTitle());

File "/home/tomcat-liferay/liferay_production/barcode-creation/wizard_scripts/samp_sheet.py", line 94, in getPersonTitleAndName
if len(personObject["title"]) > 2:
TypeError: object of type 'NoneType' has no len()