WindowsPhoneToastNotify: notification timeout & UploadContainer as base64string

The API to send notifications is limited by 500/day. In case of many downloads and no client connected to the server,  the hooks spam to much. To decrease the message-Spam I've add a timeout. 

For me its unclear which data type the uploadContainer "data" has. The WebUI writes the data direct to the download folder an call addPackage with the path to the package (dlc/rdfs/ccf).  A solution is maybe to decelerate the data as base64string.