feat(stats): show work and time-off lengths (#66)

src/app/services/translation-service.ts

@@ -131,6 +131,11 @@ export interface AppTranslations {
 			open: string;
 			title: string;
 			leaveDays: string;
+			averageWorkSequence: string;
+			averageTimeOffPeriod: string;
+			longestTimeOffPeriod: string;
+			workingDays: string;
+			calendarDays: string;
 			partialPlan: string;
 			help: string;
 		};