Add cell info from Samsung Service Mode on I9100/I9100g

Fix NumberFormatException: Invalid int: "ffffffff" and neighbours

Fix NPE

Conflicts:
	AndroidManifest.xml
	res/values/strings.xml
	res/xml/preferences.xml
	src/org/mozilla/mozstumbler/MozstumblerApplication.java
	src/org/mozilla/mozstumbler/cellscanner/CellScanner.java
	src/org/mozilla/mozstumbler/preferences/Prefs.java

set current cell network type

strange rscp=139 values

strange rscp=-255 values

Conflicts:
	src/org/mozilla/mozstumbler/cellscanner/SamsungServiceModeCellScanner.java