Screen recorder settings [2/2]

* Possibility to save preferences regarding pointer
* Possibility to use microphone as audio input

Change-Id: I2d99e6d33c9fd60ec07d265001218590d89bab5e
Option to disable safe volume warning [1/2]

* This message appears when using headphones and listening to music
* This setting will be applied at boot, so a reboot is necessary

Change-Id: I64e097d548843ca4116373ecc44e45da95c207a8