Localizing search box strings, channel tags

fixes #3124
fixes #3128
fixes #3083

frontend/src/app/lightning/channel/closing-type/closing-type.component.ts

@@ -17,19 +17,19 @@ export class ClosingTypeComponent implements OnChanges {
   getLabelFromType(type: number): { label: string; class: string } {
     switch (type) {
       case 1: return { 
-        label: 'Mutually closed',
+        label: $localize`Mutually closed`,
         class: 'success',
       };
       case 2: return {
-        label: 'Force closed',
+        label: $localize`Force closed`,
         class: 'warning',
       };
       case 3: return {
-        label: 'Force closed with penalty',
+        label: $localize`Force closed with penalty`,
         class: 'danger',
       };
       default: return {
-        label: 'Unknown',
+        label: $localize`:@@e5d8bb389c702588877f039d72178f219453a72d:Unknown`,
         class: 'secondary',
       };
     }