option to show rejected calls as missed (1/2)

this lets you check a preference which will list
rejected calls as missed calls in the call log

it has a corresponding (2/2) part in frameworks/base
to initialize the system preference variable

PS2 : whitespace cleanup
PS3 : use int instead of boolean (minor logic rework)
PS4 : derp. typo.

Change-Id: I3439282416652e9a66a1452c9f69f50d47819df1
Signed-off-by: ChampionSwimmer <android@championswimmer.tk>

Conflicts:

	res/values/strings.xml
	src/com/android/phone/CallFeaturesSetting.java