coding style and linting

src/main/java/de/deadlocker8/budgetmaster/ProgramArgs.java

.../deadlocker8/budgetmaster/accounts/AccountController.java

.../de/deadlocker8/budgetmaster/accounts/AccountService.java

...java/de/deadlocker8/budgetmaster/advices/ColorAdvice.java

.../deadlocker8/budgetmaster/authentication/UserService.java

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

...a/de/deadlocker8/budgetmaster/charts/ChartController.java

...ava/de/deadlocker8/budgetmaster/charts/DefaultCharts.java

...locker8/budgetmaster/controller/DatePickerController.java

...dlocker8/budgetmaster/controller/EmptyPageController.java

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

...eadlocker8/budgetmaster/database/legacy/LegacyParser.java

.../de/deadlocker8/budgetmaster/filter/FilterController.java

...deadlocker8/budgetmaster/filter/FilterHelpersService.java

...er8/budgetmaster/repeating/RepeatingOptionRepository.java

...8/budgetmaster/repeating/RepeatingTransactionUpdater.java

...adlocker8/budgetmaster/reports/HeaderFooterPageEvent.java

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

...dlocker8/budgetmaster/reports/ReportGeneratorService.java

.../budgetmaster/reports/settings/ReportSettingsService.java