Expandable NumberPicker width in bytesPicker dialog

Issue: The bytesPicker NumberPicker width was set to 48dip,
thus it couldn't accomodate more than 5 digits.
Solution: Set the NumberPicker layout_width to wrap_content and minWidth to 48dip.

Change-Id: Id2887cc5d48a94fa108f2ebe06f982cf2c1314dc
diff --git a/res/layout/data_usage_bytes_editor.xml b/res/layout/data_usage_bytes_editor.xml
index 6207391b..ec6e64f 100644
--- a/res/layout/data_usage_bytes_editor.xml
+++ b/res/layout/data_usage_bytes_editor.xml
@@ -22,7 +22,8 @@
 
     <NumberPicker
         android:id="@+id/bytes"
-        android:layout_width="48dip"
+        android:layout_width="wrap_content"
+        android:minWidth="48dip"
         android:layout_height="wrap_content"
         android:layout_gravity="center_vertical"
         android:layout_marginLeft="16dip"