Adds ability to answer call with hardware HOME button (2/2)

(preparation for winter time)

Change-Id: I25d69913847b1756f89a04e14e1dee4a939afcb3
Settings: Increasing ring volume

Patch-set 2: Added czech translation

Change-Id: I8aae3a76775ce3f850c32ea9a22905cff9897315
Signed-off-by: Petr Reznicek <kecinzer@gmail.com>

Conflicts:

	res/values/strings.xml

Signed-off-by: Petr Reznicek <kecinzer@gmail.com>

Conflicts:
	res/values-cs/strings.xml
	res/values/arrays.xml

Conflicts:
	res/values/arrays.xml
	res/values/strings.xml