- Use HTTPS URLs for game logos/achievement icons. Fixes #87.

- Fix DoDownloadLogo not catching exceptions for DownloadData.

SAM.Game/Program.cs

@@ -22,6 +22,7 @@
 
 using System;
 using System.Diagnostics;
+using System.Net;
 using System.Windows.Forms;
 
 namespace SAM.Game
@@ -84,6 +85,12 @@ namespace SAM.Game
                 return;
             }
 
+            /* Disable server certificate validation.
+             * This is for media downloads (achievement icons).
+             * https://media.steamcommunity.com/ has certs issued to (various).e.akamai.net.
+             */
+            ServicePointManager.ServerCertificateValidationCallback = (s, ce, ch, e) => true;
+
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
             Application.Run(new Manager(appId, client));