Update of exercise list and atomic testing list after creation

[johanah29]

Description

After the creation of an element, the list must refresh with the the element created at the top. it is not the case for simulations and atomic tests.

Reproducible Steps

1. Go to simulations or atomic testings page
2. Add a simulation or an atomic testing

Expected Output

New simulation or atomic test is on top of the list.

Actual Output

New simulation or atomic test is anywhere in the list