Screen recorder settings [2/2]

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

PS2: Toggling pointer in notification updates pref
Change-Id: If19a59df00cfae79e6c281aaac0d7356552370d2

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/AndroidManifest.xml
	packages/SystemUI/src/com/android/systemui/omni/screenrecord/GlobalScreenrecord.java
	packages/SystemUI/src/com/android/systemui/omni/screenrecord/TakeScreenrecordService.java