Adding subfolder support (#186)

Adding EJS Templating engine + a baseUrl variable injected in front-end.

front/src/views/queue.html

@@ -6,7 +6,7 @@
         <p class="statusSubMessage">{{status.error}}</p>
         
         <a class="linkButton" href="https://github.com/gmetais/YellowLabTools/issues" target="_blank">Report the issue on GitHub</a>
-        <a class="linkButton" href="/">New test</a>
+        <a class="linkButton" href="<%= baseUrl %>">New test</a>
     </div>
     <div ng-if="status.statusCode == 'awaiting'">
         <div class="status">
@@ -28,7 +28,7 @@
     <div class="status">Error 404 (test not found)</div>
     <p class="statusSubMessage">The server probably just rebooted. We are very sorry about that, please try to launch the test again.</p>
     
-    <a class="linkButton" href="/">New test</a>
+    <a class="linkButton" href="<%= baseUrl %>">New test</a>
 </div>
 <div ng-if="connectionLost == true">
     <div class="status">Connection lost with server</div>