big refactoring: classes related to reports

...e/deadlocker8/budgetmaster/controller/BaseController.java

...deadlocker8/budgetmaster/reports/ReportConfiguration.java

...ker8/budgetmaster/reports/ReportConfigurationBuilder.java

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

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

...eadlocker8/budgetmaster/reports/columns/ReportColumn.java

.../budgetmaster/reports/columns/ReportColumnRepository.java

...er8/budgetmaster/reports/columns/ReportColumnService.java

...locker8/budgetmaster/reports/settings/ReportSettings.java

...dgetmaster/reports/settings/ReportSettingsRepository.java

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