Update SchoolBus to use browser router, replacing hash based routing.

client/src/js/app.jsx

@@ -1,6 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { Provider } from 'react-redux';
-import { Router, Route, Redirect, hashHistory } from 'react-router';
+import { Router, Route, Redirect, browserHistory } from 'react-router';
 import { ProgressBar } from 'react-bootstrap';
 
 import * as Constant from './constants';
@@ -118,7 +118,7 @@ const App = () => {
 
   return (
     <Provider store={store}>
-      <Router history={hashHistory}>
+      <Router history={browserHistory}>
         <Redirect from="/" to={`/${Constant.HOME_PATHNAME}`} />
         <Route path="/" component={Main}>
           <Route path={Constant.HOME_PATHNAME} component={Home} />