Download videos automatically

This version includes automatic video download. A folder inside my documents/Bling.exe/Downloads/Videos is created and every 20 seconds a video is downloaded, This wait time between downloads is for reducing impact in immedia servers. It may seem slow but this functionality assumes the application is always running so download time is not a problem.

last_update.txt is a file to keep track of the timestamp of last downloaded video to reduce rest api calls.