fix logout error, adding contributionCategory to submission

...f/modules/submission/controller/SubmissionController.java

...nipotsdam/gf/modules/submission/model/FullSubmission.java

...f/modules/submission/model/FullSubmissionPostRequest.java

...potsdam/gf/modules/submission/view/SubmissionService.java

...in/java/unipotsdam/gf/process/DossierCreationProcess.java

...schen/src/main/webapp/annotation/js/unstructuredUpload.js

...rc/main/webapp/annotation/upload-unstructured-dossier.jsp

gemeinsamforschen/src/main/webapp/project/js/tasks.js

gemeinsamforschen/src/main/webapp/taglibs/js/utility.js

gemeinsamforschen/src/test/resources/database/fltrail.sql