* Fix all stylelint errors
For any errors that fixing would require changing the output of the css disable stylelint for that line instead of modifying.
* Update quality.py
Make stylelint quality check pass when there are no errors
* Delete empty selectors
Instead of refreshing only the necessary parts,
"Run Code" reloads the whole page.
This commit fixes this behaviour, by refreshing the
specific elements belonging to the Problem instead.
Also tidies up indentation.
