Changed Goo.im url for updates searching
Also, i've added the necessary vars to check if an update is a delta
update.
FilePatcher: adds the ability to download and flash delta updates.

This is totally untested and may not work at all. I've got to do some
tests and change some code.
Always download the delta package if available
Tell the user if an update is a delta package
Correct download path
Option to download complete rom or delta package
Remove unnecesary name
Corrected delta file name
Disable patcher till there's an ota service that needs it