Enabled repeatables (#8572)

* Enabled repeatables

* Added every x to weekly

* Updated new recur logic to work with tests

* Added repeatable tests back

* Added custom day start support

* Moved back to zone function

* Added zone back

* Added nextDue field

* Abstracted set next due logic, set offset, and mapped to ISO

* Removed extra codes

* Removed clone deep

* Added summary local

* Fixed every x weekly

* Prevented edit of repeats on

* Added next due date

* Fixed display of next due dates

* Fixed broken tests

* added next due date as today for weekly

* Fixed integration tests

* Updated common test

* Use user's format

* Allow user to deselect all days during week

* Removed let from front end

test/api/v3/integration/tasks/POST-tasks_user.test.js

@@ -510,6 +510,7 @@ describe('POST /tasks/user', () => {
       expect(task.weeksOfMonth).to.eql([3]);
       expect(new Date(task.startDate)).to.eql(now);
       expect(task.isDue).to.be.true;
+      expect(task.nextDue.length).to.eql(6);
     });
 
     it('creates multiple dailys', async () => {