fix(website): Add href to menu items.

Author: andres

Diff for: website/index.html

@@ -27,15 +27,17 @@
 
           <!-- Quick start -->
           <li class="dropdown">
-            <a id="drop1" class="dropdown-toggle" data-toggle="dropdown">Quick Start <span class="caret"></span></a>
+            <a id="drop1" href="javascript:void(0)" class="dropdown-toggle"
+                data-toggle="dropdown">Quick Start <span class="caret"></span></a>
             <ul class="dropdown-menu">
               <li><a tabindex="-1" href="#/tutorial">Tutorial</a></li>
             </ul>
           </li>
 
           <!-- Protractor Setup -->
           <li class="dropdown">
-            <a id="drop2" class="dropdown-toggle" data-toggle="dropdown">Protractor Setup <span class="caret"></span></a>
+            <a id="drop2" href="javascript:void(0)" class="dropdown-toggle"
+                data-toggle="dropdown">Protractor Setup <span class="caret"></span></a>
             <ul class="dropdown-menu">
               <li><a tabindex="-1" href="#/protractor-setup">Setting Up Protractor</a></li>
               <li><a tabindex="-1" href="#/server-setup">Setting Up the Selenium Server</a></li>
@@ -46,7 +48,8 @@
 
           <!-- Protractor Tests -->
           <li class="dropdown">
-            <a id="drop3" class="dropdown-toggle" data-toggle="dropdown">Protractor Tests <span class="caret"></span></a>
+            <a id="drop3" href="javascript:void(0)" class="dropdown-toggle"
+                data-toggle="dropdown">Protractor Tests <span class="caret"></span></a>
             <ul class="dropdown-menu">
               <li><a tabindex="-1" href="#/getting-started">Getting Started</a></li>
               <li><a tabindex="-1" href="#/tutorial">Tutorial</a></li>
@@ -60,7 +63,8 @@
 
           <!-- Reference -->
           <li class="dropdown">
-            <a id="drop4" class="dropdown-toggle" data-toggle="dropdown">Reference <span class="caret"></span></a>
+            <a id="drop4" href="javascript:void(0)" class="dropdown-toggle"
+                data-toggle="dropdown">Reference <span class="caret"></span></a>
             <ul class="dropdown-menu">
               <li><a tabindex="-1" href="https://github.com/angular/protractor/blob/master/docs/referenceConf.js">Configuration File Reference</a></li>
               <li><a tabindex="-1" href="#/api">Protractor API</a></li>