Update upload template.

gns3server/templates/upload.html

@@ -1,10 +1,10 @@
 <html>
 <head> 
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> 
-<title>Upload Form</title>
+<title>Upload Form for GNS3 server {{version}}</title>
 </head>
 <body>
-<p><h1>Select & Upload</h1></p>
+<p><h1>Select & Upload (v{{version}})</h1></p>
 <form enctype="multipart/form-data" action="/upload" method="post">
 File: <input type="file" name="file" />
 <br />
@@ -12,7 +12,7 @@ File: <input type="file" name="file" />
 <input type="submit" value="upload" />
 </form>
 {%if items%}
-<h3>Files</h3>
+<h3>Files on {{host}}</h3>
 <ul>
 {%for item in items%}
 <li>{{path}}/{{item}}</a></li>