Remove dependency incompatible with react-scripts-v1.1.1

 - Remove dependency
 - Create local utils with the same evaluations than `yn`

Author: fernandomg

package-lock.json

@@ -27,8 +27,7 @@
     "react-transition-group": "^2.2.1",
     "selenium-webdriver": "^3.6.0",
     "sweetalert": "^2.1.0",
-    "web3": "^1.0.0-beta.30",
-    "yn": "^3.0.0"
+    "web3": "^1.0.0-beta.30"
   },
   "scripts": {
     "build-css": "node-sass-chokidar src/assets/stylesheets/application.scss -o src/assets/stylesheets --output-style=compressed",

package.json

@@ -6,7 +6,7 @@ import menuOpenIcon from '../assets/images/icons/icon-close.svg'
 import { Wallet } from './Wallet'
 import { DailyQuotaModal } from './DailyQuotaModal'
 import { inject, observer } from 'mobx-react/index'
-import yn from 'yn'
+import yn from './utils/yn'
 
 const getMobileMenuLinks = (onMenuToggle, withoutEvents) =>
   (<div className="links_container_mobile">

src/components/Header.js

@@ -2,7 +2,7 @@ import React from 'react';
 import { inject, observer } from "mobx-react";
 import { EventsListHeader } from './index'
 import { Event } from './index'
-import yn from 'yn'
+import yn from './utils/yn'
 import { Redirect } from 'react-router'
 
 

src/components/RelayEvents.js

@@ -4,7 +4,7 @@ import pattern from '../assets/images/pattern.svg'
 import { BridgeStatistics } from './index'
 import { TransactionsStatistics } from './TransactionsStatistics'
 import { BRIDGE_MODES } from '../stores/utils/bridgeMode'
-import yn from 'yn'
+import yn from './utils/yn'
 import { Redirect } from 'react-router'
 
 @inject("RootStore")

src/components/StatisticsPage.js

@@ -3,7 +3,7 @@ import { inject, observer } from "mobx-react"
 import { Configuration } from './Configuration'
 import { Authority } from './Authority'
 import pattern from '../assets/images/pattern.svg'
-import yn from 'yn'
+import yn from './utils/yn'
 
 
 @inject("RootStore")

src/components/StatusPage.js

@@ -0,0 +1,15 @@
+const yn = input => {
+  input = String(input).trim();
+
+  if (/^(?:y|yes|true|1)$/i.test(input)) {
+    return true;
+  }
+
+  if (/^(?:n|no|false|0)$/i.test(input)) {
+    return false;
+  }
+
+  return false;
+};
+
+export default yn