Return: National Data Roaming [2/3]

Credits: CM

PS 2 : Fixed Deprecated onPreferenceTreeClick
PS 3 : Trim lines length
PS 4 : Fix FC

Change-Id: I1230c8e227e787f51bea0ae3756892ab4f6e5144

Conflicts:
	res/values/slim_strings.xml
Merge branch 'kitkat-remix' of github.com:AOSPAL/android_packages_services_Telephony into kitkat-remix