Remove unused deprecated class

Signed-off-by: Frca <killerfrca@gmail.com>
Fix crash on start

Signed-off-by: Frca <killerfrca@gmail.com>
Fix sending too much requests

Signed-off-by: Frca <killerfrca@gmail.com>
Rewrite networking of app

Signed-off-by: Frca <killerfrca@gmail.com>
Move ImageDownloaderTask class to more proper network package

Signed-off-by: Frca <killerfrca@gmail.com>