Update custome translations to i18n and various improvements

src/constants/defaults.ts

@@ -40,13 +40,14 @@ export interface TherapeuticRange {
 }
 
 export interface UiSettings {
-  showDayTimeOnXAxis: boolean;
+  showDayTimeOnXAxis: 'continuous' | '24h' | '12h';
   showTemplateDay: boolean;
   chartView: 'ldx' | 'damph' | 'both';
   yAxisMin: string;
   yAxisMax: string;
   simulationDays: string;
   displayedDays: string;
+  showDayReferenceLines?: boolean;
 }
 
 export interface AppState {
@@ -98,7 +99,7 @@ export const getDefaultState = (): AppState => ({
   therapeuticRange: { min: '10.5', max: '11.5' },
   doseIncrement: '2.5',
   uiSettings: {
-    showDayTimeOnXAxis: true,
+    showDayTimeOnXAxis: 'continuous',
     showTemplateDay: false,
     chartView: 'both',
     yAxisMin: '0',