Merge branch 'auto-config-git' into 'master'

Auto config git if user forgot

If git is not configured properly, let gitlab:check try to fix it by executing the commands itself instead of outputing how the user could fix it.

If this fails the error is still displayed.

Edit;
Not yet added to the CHANGELOG as;
* Im not really sure this fits in the scope of a test
* No clue how to test this properly

See merge request !383