refactor(es modules): use polylabel module and update aleaPRNG as local lib

src/layers/renderers/drawIce.js

@@ -1,4 +1,5 @@
 import {getGridPolygon} from "utils/graphUtils";
+import {aleaPRNG} from "scripts/aleaPRNG";
 
 export function drawIce() {
   const {cells, vertices} = grid;

src/layers/renderers/drawProvinces.js

@@ -1,3 +1,5 @@
+import polylabel from "polylabel";
+
 export function drawProvinces() {
   const labelsOn = provs.attr("data-labels") == 1;
   provs.selectAll("*").remove();

src/layers/renderers/drawStates.js

@@ -1,3 +1,5 @@
+import polylabel from "polylabel";
+
 export function drawStates() {
   regions.selectAll("path").remove();