[TASK] Some cleanup

Classes/Controller/Ajax/UploadController.php

Classes/Domain/Model/Company.php

Classes/Domain/Model/Contact.php

Classes/Domain/Model/Department.php

Classes/Domain/Model/ExperienceLevel.php

Classes/Domain/Model/FileReference.php

Classes/Domain/Model/Job.php

Classes/Domain/Model/JobApplication.php

Classes/Domain/Repository/ContactRepository.php

Classes/Domain/Repository/DepartmentRepository.php

Classes/Domain/Repository/ExperienceLevelRepository.php

Classes/Domain/Repository/JobApplicationRepository.php

Classes/Domain/Repository/JobRepository.php

Classes/Event/Listener/AccessPageListEventListener.php

Classes/Hooks/PageLayoutView/PluginRenderer.php

Classes/Pagination/Pagination.php

Classes/Preview/PreviewService.php

Classes/Service/BackendService.php

Classes/Service/FileAndFolderService.php

Classes/Service/SitemapService.php