DocumentsUI: Open /sdcard instead of Downloads by default

Also enable show device root of course

Change-Id: I35be6df85f9dcc9714d815f13a50b30794dde1d3
diff --git a/res/values/config.xml b/res/values/config.xml
index 494667d..ff980e0 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -27,12 +27,12 @@
     <bool name="full_bar_search_view">true</bool>
 
     <!-- Indicates if showing as search bar design -->
-    <bool name="show_search_bar">false</bool>
+    <bool name="show_search_bar">true</bool>
 
     <!-- Indicates if showing hidden files by default -->
     <bool name="show_hidden_files_by_default">false</bool>
 
-    <string name="default_root_uri" translatable="false">content://com.android.providers.downloads.documents/root/downloads</string>
+    <string name="default_root_uri" translatable="false">content://com.android.providers.downloads.documents/root/primary</string>
     <!-- The value is used in sorting process on Drawer menu. If the root's package name
      start with it, the item will have higher order than others.-->
     <string name="preferred_root_package" translatable="false">com.android.shell</string>
@@ -62,7 +62,7 @@
     <bool name="feature_debug_mode">false</bool>
 
     <!-- Indicates if internal storage is shown as default or not. -->
-    <bool name="config_default_show_device_root">false</bool>
+    <bool name="config_default_show_device_root">true</bool>
 
     <!-- Whether to show capitalize string on Button -->
     <bool name="config_button_all_caps">true</bool>