Studio: small improvements after selftesting, icons reusing HeroIcons can now be colored as well

Docs/Schemas/DenominationConfigJsonJSC.ts

@@ -117,6 +117,10 @@ export default {
         "prefix": {
           "description": "If set, then the canonical value will be prefixed instead, e.g. for '€'\nNote that if all values use 'prefix', the dropdown might move to before the text field",
           "type": "boolean"
+        },
+        "addSpace": {
+          "description": "If set, add a space between the quantity and the denomination.\n\nE.g.: `50 mph` instad of `50mph`",
+          "type": "boolean"
         }
       },
       "required": [