Change .Net navigation order for gh-pages (#2009)

* Change .Net navigation order.

* Add PHP to navigation.

index.html

@@ -23,6 +23,12 @@ <h1 class="logo"><img src="_landing-page-static/images/logo-full.svg" alt="Googl
   <nav class="main-nav">
     <div class="nav-current">Python</div>
     <ul class="menu">
+      <li>
+        <a href="http://googlecloudplatform.github.io/google-cloud-dotnet" title="google-cloud-dotnet">
+          <img src="_landing-page-static/images/icon-lang-dotnet.svg" alt=".NET icon" class="menu-icon" />
+          .NET
+        </a>
+      </li>
       <li>
         <a href="https://googlecloudplatform.github.io/gcloud-java/" title="gcloud-java">
           <img src="_landing-page-static/images/icon-lang-java-duke.svg" alt="Duke icon" class="menu-icon">
@@ -35,6 +41,12 @@ <h1 class="logo"><img src="_landing-page-static/images/logo-full.svg" alt="Googl
           Node.js
         </a>
       </li>
+      <li>
+        <a href="https://googlecloudplatform.github.io/gcloud-php/" title="gcloud-php">
+          <img src="_landing-page-static/images/icon-lang-php.svg" alt="PHP icon" class="menu-icon">
+          PHP
+        </a>
+      </li>
       <li>
         <a href="#" title="gcloud-python">
           <img src="_landing-page-static/images/icon-lang-python-white.svg" alt="Python icon" class="menu-icon">
@@ -47,12 +59,6 @@ <h1 class="logo"><img src="_landing-page-static/images/logo-full.svg" alt="Googl
           Ruby
         </a>
       </li>
-      <li>
-        <a href="http://googlecloudplatform.github.io/google-cloud-dotnet" title="google-cloud-dotnet">
-          <img src="_landing-page-static/images/icon-lang-dotnet.svg" alt=".NET icon" class="menu-icon" />
-          .NET
-        </a>
-      </li>
     </ul>
   </nav>
   <!-- end of language-switcher -->