Let Lockscreen to Rotate to the Current Device Orientation

[cibersheep]

1. Use the device with any orientation
2. Lock the screen
3. Unlock it

• Behaviour: screen rotates to primal orientation
• Expected: lockscreen to stay oriented to the device's current orientation

[mateosalta]

#273

[mateosalta]

This is also a usage issue for mounted devices, or usage with stands/cords - often times the hardware is dictating a better orientation, we need to adapt.

• phone in landscape for navigation in car
• tablet upside down for charging stand (nexus 7)
• tablet upside down for case and cords (bq M10)
• phone with kickstand for bedside clock/alarm
• holding the phone while plugged into a external battery, extremely friendly to hold with cord on top

[cibersheep]

Oh, I forgot I started to work into this and need to finish a little thing

[cibersheep]

I close this as is addressed here: #419