Bumped Sabnzbd default history request size from 30 to 60

(cherry picked from commit 8b2550cef0381a07c466044063c9d8c2be4d89c3)

src/NzbDrone.Core/Configuration/ConfigService.cs

@@ -187,7 +187,7 @@ namespace NzbDrone.Core.Configuration
 
         public int DownloadClientHistoryLimit
         {
-            get { return GetValueInt("DownloadClientHistoryLimit", 30); }
+            get { return GetValueInt("DownloadClientHistoryLimit", 60); }
 
             set { SetValue("DownloadClientHistoryLimit", value); }
         }