Fix RecursionError causing app to craash after some time

Instead of using recursion logic in run_every method,
we tend to stick with iterative way of infinite loop.

Because Python has a default limit of recurrence calls
set to 1000 - when application was running for some time
~ 1000secs, it crashed with the message:
- RecursionError: maximum recursion depth exceeded in comparison

Now it's fixed since we do not use recursion.