Hides backup button on mobile devices since the mobile browsers are not supporting downloading files, as they don't have access to the FS of the device.
Removes unnecesary console.log
Backup will be disabled ONLY for iOS devices, as this ones don't have access to the device's FS.
Merge pull request #1518 from ssotomayor/master

Hides backup button on mobile devices since the mobile browsers are not supporting downloading files, as they don't have access to the FS of the device.