Add dedicated permission for administering module settings

MR has been created and covering all the points mentioned in remaining tasks.

Adding few screenshots after testing in my local setup.

@kalpanajaiswal, thanks for your contribution! As I mention in the MR comment, I don't see value in adding a .gitlab-ci.yml that is so generic it only runs sleep. I would suggest we remove it from the MR branch.

As per the suggestion .gitlab-ci.yml is removed from the commit.

Thanks, committed to 2.1.x!