location: add (empty) smartbeaconing prefs

res/xml/location_smartbeaconing.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <PreferenceCategory
+	android:title="@string/p_source_smart">
+
+    </PreferenceCategory>
+</PreferenceScreen>

src/location/LocationSource.scala

@@ -13,7 +13,7 @@ object LocationSource {
 	}
 	def instanciatePrefsAct(prefs : PrefsWrapper) = {
 		prefs.getString("loc_source", DEFAULT_CONNTYPE) match {
-			case "smartbeaconing" => R.xml.location_periodic
+			case "smartbeaconing" => R.xml.location_smartbeaconing
 			case "periodic" => R.xml.location_periodic
 			case "manual" => R.xml.location_manual
 		}