Add WeChat logo and fix banner

Signed-off-by: Jimmy McArthur <jimmy@tipit.net>

Author: jimmytipit

openstack.cn/faq/index.html

@@ -174,7 +174,7 @@
     <div class="row text-wrapper">
         <div class="col-md-12  title-box">
             <div class="summit-banner">
-                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
+                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;margin-top:120px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
                 <!-- <span class="arrow left"></span><span class="arrow right"></span> -->
             </div>
         </div>

openstack.cn/index.html

@@ -288,7 +288,7 @@
     <div class="row text-wrapper">
         <div class="col-md-12  title-box">
             <div class="summit-banner">
-                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
+                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;margin-top:120px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
                 <!-- <span class="arrow left"></span><span class="arrow right"></span> -->
             </div>
         </div>
@@ -373,8 +373,8 @@ <h5><strong><span style="color: #ffff00;">上海世博中心 Shanghai Expo Centr
                 <h4 class="summit-title script">开源基础设施峰会</h4>
                 <h2>开放式开发大本营</h2>
                 <div class="bird"> 
-                    <h5>Join the conversation <br><strong><a href="https://twitter.com/openstack" target="_blank"><i class="fab fa-twitter" style="font-size: 24px;color:#ffd602;"></a></i>
-                    &nbsp;&nbsp;&nbsp;&nbsp;<a href="https://www.facebook.com/openstack/" target="_blank"><i class="fab fa-facebook-f" style="font-size: 24px;color:#ffd602;"></i></a></strong>
+                    <h5><strong><a href="https://twitter.com/openstack" target="_blank"><i class="fab fa-twitter" style="font-size: 24px;color:#ffd602;"></i></a>
+                    &nbsp;&nbsp;&nbsp;&nbsp;<a href="https://www.facebook.com/openstack/" target="_blank"><i class="fab fa-facebook-f" style="font-size: 24px;color:#ffd602;"></i></a><br /><br /><img src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/qrcode-for-gh-5cc38c749efd-1280.jpg" height="100"></strong>
                     </h5>
                 </div>
             </div>

openstack.cn/sponsors/index.html

@@ -173,7 +173,7 @@
     <div class="row text-wrapper">
         <div class="col-md-12  title-box">
             <div class="summit-banner">
-                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
+                <p> </p><p><img style="width: 95%; margin-bottom: 70px; max-width: 700px;margin-top:120px;" title="开源基础设施峰会 Shanghai 2019" src="https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-assets-prod/summits/shanghai/Shanghai2019-Summit-Logo-Web-Translated.svg" alt=""></p>
                 <!-- <span class="arrow left"></span><span class="arrow right"></span> -->
             </div>
         </div>