fetch data from non-working days API endpoint

frontend/src/app/core/apiv3/endpoints/days/api-v3-days-paths.ts

@@ -47,4 +47,7 @@ export class ApiV3DaysPaths extends ApiV3ResourceCollection<IDay, ApiV3DayPaths>
 
   // /api/v3/days/week
   public readonly week = new ApiV3GettableResource(this.apiRoot, this.path, 'week', this);
+
+  // /api/v3/days/nonWorkingDays
+  public readonly nonWorkingDays = new ApiV3GettableResource(this.apiRoot, this.path, 'non_working', this);
 }

frontend/src/app/core/state/days/day.service.ts

@@ -30,6 +30,7 @@ export class DayResourceService extends ResourceCollectionService<IDay> {
     return this
       .apiV3Service
       .days
+      .nonWorkingDays
       .path;
   }
 
@@ -49,7 +50,6 @@ export class DayResourceService extends ResourceCollectionService<IDay> {
 
     const filters:ApiV3ListFilter[] = [
       ['date', '<>d', [from, to]],
-      ['working', '=', ['f']],
     ];
 
     return this.require({ filters });