Fix npm run build

In order to fix this issue:
https://github.com/facebook/create-react-app/issues/3734

Switch from 'query-string' to 'qs'

embark-ui/package-lock.json

@@ -8854,15 +8854,6 @@
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
       "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
     },
-    "query-string": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/query-string/-/query-string-6.1.0.tgz",
-      "integrity": "sha512-pNB/Gr8SA8ff8KpUFM36o/WFAlthgaThka5bV19AD9PNTH20Pwq5Zxodif2YyHwrctp6SkL4GqlOot0qR/wGaw==",
-      "requires": {
-        "decode-uri-component": "^0.2.0",
-        "strict-uri-encode": "^2.0.0"
-      }
-    },
     "querystring": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
@@ -10263,11 +10254,6 @@
         "xtend": "^4.0.0"
       }
     },
-    "strict-uri-encode": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-2.0.0.tgz",
-      "integrity": "sha1-ucczDHBChi9rFC3CdLvMWGbONUY="
-    },
     "string-length": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/string-length/-/string-length-1.0.1.tgz",

embark-ui/package.json

@@ -11,7 +11,7 @@
     "connected-react-router": "^4.3.0",
     "history": "^4.7.2",
     "prop-types": "^15.6.2",
-    "query-string": "^6.1.0",
+    "qs": "^6.5.2",
     "react": "^16.4.2",
     "react-ace": "^6.1.4",
     "react-copy-to-clipboard": "^5.0.1",

embark-ui/src/containers/AppContainer.js

@@ -2,11 +2,9 @@ import PropTypes from "prop-types";
 import {connect} from 'react-redux';
 import React, {Component} from 'react';
 import {withRouter} from "react-router-dom";
-
 import routes from '../routes';
 import Unauthenticated from '../components/Unauthenticated';
 import Layout from "../components/Layout";
-import queryString from 'query-string';
 
 import {
   initBlockHeader,
@@ -18,6 +16,8 @@ import {
 
 import { getToken, getAuthenticationError } from '../reducers/selectors';
 
+const qs = require('qs');
+
 class AppContainer extends Component {
   constructor (props) {
     super(props);
@@ -29,7 +29,7 @@ class AppContainer extends Component {
     if (!this.props.location.search) {
       return;
     }
-    const token = queryString.parse(this.props.location.search).token;
+    const token = qs.parse(this.props.location.search, {ignoreQueryPrefix: true}).token;
     if (token === this.props.token) {
       return;
     }