Remove access to repository in CategoryService

...adlocker8/budgetmaster/categories/CategoryController.java

.../deadlocker8/budgetmaster/categories/CategoryService.java

...de/deadlocker8/budgetmaster/database/DatabaseService.java

...de/deadlocker8/budgetmaster/reports/ReportController.java

...deadlocker8/budgetmaster/settings/SettingsController.java

...e/deadlocker8/budgetmaster/templates/TemplateService.java

...ker8/budgetmaster/transactions/TransactionController.java

...locker8/budgetmaster/transactions/TransactionService.java