SUW: use DayNight theme for TV

* As the TvSettings are always dark too, it looks better to follow it.

Change-Id: Ifa3d2f21b18ffb3bcc791205c271f76221db2a95
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 0399715..80a36ec 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -58,7 +58,7 @@
 
     <application android:label="@string/app_name"
                  android:icon="@mipmap/ic_launcher"
-                 android:theme="@style/SudThemeGlifV3.Light"
+                 android:theme="@style/Theme.Setup"
                  android:uiOptions="none"
                  android:taskAffinity="com.android.wizard"
                  android:name=".SetupWizardApp">