Recurring Tasks Not Supports in Tasks App

[murdadesmaeeli]

Currently recurring tasks are not supported in the Tasks app. It is a very handy feature and one that almost all task managers have. If one is on IOS, one can use recurring tasks from the reminders app but you will soon run into merge conflicts.

If you submit done on a recurring task on Nextcloud site it clears all future tasks too. Hence, one has to submit done only on IOS devices for recurring tasks through reminders app.

[raimund-schluessler]

Duplicate of #34 and #2276.