Hover settings (2/2)

- Require full screen
- Exclude non-clearable
- Exclude low priority
- Exclude topmost app

Thanks @Der-Schubi & @cristianomatos

Change-Id: I36eab90e6c06b31c053293a35034d8f5b99fbf03

Conflicts:
	res/values/mahdi_strings.xml
	res/xml/customization_settings.xml
Hover notification timeout (2/2)

Allow user to set how much time the hover notification will stay visisible without touch the screen

Change-Id: I6a6fb5609a8dd4f97bfefdbbab38b87de8d2a11a

Conflicts:
	res/values/mahdi_arrays.xml
	res/values/mahdi_strings.xml
revert "HOVER: Option to only show up in Fullscreen-Mode [2/2]"

Conflicts:
	res/values/mahdi_strings.xml