IO-134 Limit shop uploads based on plan.

client/src/utils/formatbytes.js

@@ -0,0 +1,10 @@
+export default function formatBytes(a, b = 2) {
+  if (0 === a || !a) return "0 Bytes";
+  const c = 0 > b ? 0 : b,
+    d = Math.floor(Math.log(a) / Math.log(1024));
+  return (
+    parseFloat((a / Math.pow(1024, d)).toFixed(c)) +
+    " " +
+    ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"][d]
+  );
+}