DU应用锁

1. Add system lock ( Wi-Fi, Bluetooth, Mobile network data, Incoming call); 2. Fix the problem that videos/photos can’t be hidden in Sony Mobile; 3. Fix the problem that the thumbnails still exist when videos/photos have been hidden; 4. Add passcode unlock mode; 5. Add break-in Alert; 6. Fix the online crash; 7. Optimized the performance.