Make Settings app aware of layout direction

- see bug #5429822 UI should be mirrored for RTL locales (Arabic, Hebrew, farsi)

Change-Id: I696c0f66a16640af767da3c05b5d300fd2284ecb
diff --git a/res/layout/preference_icon.xml b/res/layout/preference_icon.xml
index 7660646..8e62508 100644
--- a/res/layout/preference_icon.xml
+++ b/res/layout/preference_icon.xml
@@ -23,22 +23,22 @@
     android:layout_height="wrap_content"
     android:minHeight="56dp"
     android:gravity="center_vertical"
-    android:paddingRight="?android:attr/scrollbarSize">
+    android:paddingEnd="?android:attr/scrollbarSize">
     
     <ImageView
         android:id="@+id/icon"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="6dip"
-        android:layout_marginRight="6dip"
+        android:layout_marginStart="6dip"
+        android:layout_marginEnd="6dip"
         android:layout_gravity="center"
         android:contentDescription="@null" />
 
     <RelativeLayout
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginLeft="2dip"
-        android:layout_marginRight="6dip"
+        android:layout_marginStart="2dip"
+        android:layout_marginEnd="6dip"
         android:layout_marginTop="6dip"
         android:layout_marginBottom="6dip"
         android:layout_weight="1">
@@ -55,7 +55,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_below="@android:id/title"
-            android:layout_alignLeft="@android:id/title"
+            android:layout_alignStart="@android:id/title"
             android:textAppearance="?android:attr/textAppearanceSmall"
             android:maxLines="2" />