Update Phone category according to feature availability

Phone tweaks category contained: Telephony, Messaging and Mobile Data tweaks.

Telephony is removed if device has no phone radio (relies on new Utils.hasTelephonySupport method)
Messaging is removed if stock Messaging app is not installed (even if device doesn't have phone radio, it can still send SMS, which is the case of S6000-H tablet)
Mobile Data left intact (to do: remove preference if device has no mobile data capability)