Mob 1743 fix pin type markers

Are there particular reasons against making `config` a "global" variable? Do we want to pass different configs to those two methods: `setupPoints()`, `createMap()`? If not, then let's define it at the top of the file and then remove additional parameters from `buildPointTypeFilterHtml()` and `setupPointTypeIcon()` by just accessing `markersPath` from "global" variable.