Add a possibility to escape comma when adding a parameter

[DaryaSLN]

If I add a parameter which contains comma inside to the test, it is divided into 2 parameters.

For example, I need to add an invalid email like name@mail,com as parameter, and I have the following result:

[littlefrontender]

backend issue

[TetianaKhomenko]

Hi @DaryaSLN! We are glad to inform you that we've updated the parameters by simplifying the feature. More details in changelog ;)