Deletion of issues does not impact issues/Todos indicators

Summary

The issues indicator and the Todos indicator are not updated when i delete an issue but the issue is really deleted.

Steps to reproduce

1. Create an issue and attribute it to "myself"
2. The issue indicator and the todos indicators are updated to 1
3. Select the issue
4. Click on the edit button to edit the issue
5. Click on the delete button to delete the issue
6. The issue disapears to the issues list but the issue indicator and the todos indicators are not updated to 0

Expected behavior

During the last step of the scenario, all the indicators should be updated with the right value.

Actual behaviour

During the last step of the scenario, all the indicators are not updated with the right value and show a wrong value.