Centrally define filled icons

So we don't have to manually pass the option everywhere

app/utils/icons.js

@@ -64,6 +64,12 @@ const ICONS = {
   zap,
 };
 
+const FILLED_ICONS = ['fork-and-knife', 'wikipedia'];
+
 export function getIcon(name) {
   return ICONS[name];
 }
+
+export function isIconFilled(name) {
+  return FILLED_ICONS.includes(name);
+}