Fix polyfill issue

Author: sondreb

app/angular.json

@@ -106,8 +106,8 @@
         "deploy": {
           "builder": "angular-cli-ghpages:deploy",
           "options": {
-            "name": "Ariton Team",
-            "email": "[email protected]",
+            "name": "sondreb",
+            "email": "[email protected]",
             "baseHref": "/ariton/",
             "dir": "dist/app",
             "repo": "https://github.com/block-core/ariton.git"

app/src/polyfills.ts

@@ -3,5 +3,7 @@ import * as crypto from 'crypto';
 import * as stream from 'stream';
 
 (window as any).process = process;
-(window as any).crypto = crypto;
+if (!(window as any).crypto) {
+    (window as any).crypto = crypto;
+  }
 (window as any).stream = stream;