Aperture: Add summaries for bright screen & save location

Change-Id: Id42811fb08090089eb729f657f86cf4819f5ed7a
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f3350a0..d1c2d64 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -50,7 +50,9 @@
 
     <!-- General Preferences -->
     <string name="bright_screen_title">Bright screen</string>
-    <string name="save_location_title">Save GPS location</string>
+    <string name="bright_screen_sumary">Locks brightness to 100%</string>
+    <string name="save_location_title">Save location data</string>
+    <string name="save_location_summary">Include GPS location in metadata</string>
     <string name="save_location_toast">Location permissions not granted by the user.</string>
     <string name="shutter_sound_title">Shutter sound</string>
     <string name="shutter_sound_summary">Note: In some countries this setting will be ignored</string>
diff --git a/app/src/main/res/xml/root_preferences.xml b/app/src/main/res/xml/root_preferences.xml
index e10ef70..f1cec37 100644
--- a/app/src/main/res/xml/root_preferences.xml
+++ b/app/src/main/res/xml/root_preferences.xml
@@ -8,12 +8,14 @@
             app:defaultValue="false"
             app:iconSpaceReserved="false"
             app:key="bright_screen"
+            app:summary="@string/bright_screen_sumary"
             app:title="@string/bright_screen_title" />
 
         <SwitchPreference
             app:defaultValue="false"
             app:iconSpaceReserved="false"
             app:key="save_location"
+            app:summary="@string/save_location_summary"
             app:title="@string/save_location_title" />
 
         <SwitchPreference