Fix missing markercluster css
What does this MR do?
When switching to twig templates for the main layout I accidently broke the method for the map layout to add extra css used for the marker clustering.
This meant they did not display properly, just as the numbers, but not the nice circle/font.
How confident are you it won't break things if deployed?
Should un-break things :)
Links to related issues
- believe that it will work ok and because we are in a hackathon it's ok to just have one checkbox ;)