Use Drawer in Settings app

- get rid of PreferenceActivity as much as we can and use fragments instead
- add Drawer widget
- add Dashboard high level entry into the Drawer (but this is work in progress and would be done in another CL)
- add bypass of fragment's Header  validation when launched from the Drawer but *force* validation if external
call thru an Intent

Be aware that WifiPickerActivity should remain for now a PreferenceActivity. It is used by SetupWizard and should
not trigger running the SettingsActivity's header building code. SetupWizard is a Home during the provisionnig process
and then deactivate itself as a Home but would make the Home header to appear in the Drawer (because momentarily we
would have two Home).

Also, verified that:

- the WiFi settings still work when called from SetupWizard
- when you have multiple Launchers, the Home header will appear in the list of Headers in the Drawer

Change-Id: I407a5e0fdd843ad7615d3d511c416a44e3d97c90

1 files changed, 6 insertions, 0 deletions

diff --git a/res/values/styles.xml b/res/values/styles.xml
index eee2cd9..3416b2c 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -117,6 +117,12 @@
         <item name="android:scrollbarStyle">outsideOverlay</item>
     </style>
 
+    <style name="SettingsPreferenceHeaderPanel" parent="@*android:style/PreferenceHeaderPanel">
+    </style>
+
+    <style name="SettingsPreferenceHeaderList" parent="@*android:style/PreferenceHeaderList">
+    </style>
+
     <style name="VertDivider">
         <item name="android:layout_width">@dimen/vert_divider_width</item>
         <item name="android:layout_height">fill_parent</item>