nRF Blinky v 2.6.2

What's Changed

• Splash screen fixed on Android Lollipop by @philips77 in #60
• Migration from DiffUtil to ListAdapter by @philips77 in #61

Known issues

• On Android Lollipop the device list in ScannerActivity does not get refreshed after returning from BlinkyActivity. One needs to scroll the list to make the old devices disappear.
  Steps to reproduce:
  • Flash a single device with LBS sample so that it appears on the scanner screen
  • Connect with the device
  • Turn the device off
  • Navigate back to the scanner
  • Observe that the old device is still visible together with "CAN'T SEE YOUR BLINKY"
  • Touch the screen to refresh the list and make the device gone

Full Changelog: 2.6.1...2.6.2