Updated icons and added hidpi support.

git-svn-id: https://svn.apache.org/repos/asf/allura/site/trunk@1677209 13f79535-47bb-0310-9956-ffa450edef68

index.html

@@ -65,12 +65,12 @@ <h3 class="text-black text-center">What is Allura?</h3>
                             </div>
 
                              <div class="col-8 pad-vert-sm">
-                                 <img class="icon" src="img/ic-instance-wiki.png">
+                                 <img class="icon" src="img/ic-instance-wiki.png" height="187">
                                  <a href="https://forge-allura.apache.org/p/allura/wiki/"><button class="btn-orange auto-margin">Wiki</button></a>
                             </div>
 
                              <div class="col-8 pad-vert-sm">
-                                 <img class="icon" src="img/ic-instance-ticket.png">
+                                 <img class="icon" src="img/ic-instance-ticket.png" height="187">
                                  <a href="https://forge-allura.apache.org/p/allura/tickets/"><button class="btn-orange auto-margin">Tickets</button></a>
                             </div>
                         </div>
@@ -111,19 +111,19 @@ <h3 class="text-center">Get the Latest Version of Allura</h3>
                 <div class="row">
                     <h3 class="text-center">Resources</h3>
                     <div class="col-8 pad-vert-sm">
-                        <img class="icon" src="img/ic-resources-installation.png" alt="allura installation">
+                        <img class="icon" src="img/ic-resources-installation.png" alt="allura installation" height="187">
                         <a href="https://forge-allura.apache.org/p/allura/git/ci/master/tree/INSTALL.markdown"><button class="auto-margin">Installation</button></a>
                         <p class="pad-top-sm text-center">Step-by-step installation quide</p>
                     </div>
 
                     <div class="col-8 pad-vert-sm">
-                        <img class="icon" src="img/ic-resources-quickstart.png" alt="allura quick start">
+                        <img class="icon" src="img/ic-resources-quickstart.png" alt="allura quick start" height="187">
                         <a href="https://forge-allura.apache.org/p/allura/wiki/Install%20and%20Run%20Allura%20-%20Vagrant/"><button class="auto-margin">Quick Start</button></a>
                         <p class="pad-top-sm text-center">Get a quick start with Vagrant VM</p>
                     </div>
 
                     <div class="col-8 pad-vert-sm">
-                        <img class="icon" src="img/ic-resources-docs.png" alt="allura documentation">
+                        <img class="icon" src="img/ic-resources-docs.png" alt="allura documentation" height="187">
                         <a href="https://forge-allura.apache.org/docs/#running-allura"><button class="auto-margin">Documentation</button></a>
                         <p class="pad-top-sm text-center">Check out the Allura documentation</p>
                     </div>