Work on the device admin settings UI.

Improve the look of the UI, and add the confirmation screen
for enabling an administrator.  This uses the new framework APIs
to show its description and policies it will control.
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index f0b2ac4..0b6d011 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -402,17 +402,28 @@
 
         <activity android:name="DeviceAdminSettings"
                 android:label="@string/device_admin_settings_title"
+                android:theme="@style/TallTitleBarTheme"
                 android:clearTaskOnLaunch="true"
                 >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-                <action android:name="android.app.action.ADD_DEVICE_ADMIN" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.VOICE_LAUNCH" />
                 <category android:name="com.android.settings.SHORTCUT" />
             </intent-filter>
         </activity>
 
+        <activity android:name="DeviceAdminAdd"
+                android:label="@string/device_admin_add_title"
+                android:theme="@style/TallTitleBarTheme"
+                android:clearTaskOnLaunch="true"
+                >
+            <intent-filter>
+                <action android:name="android.app.action.ADD_DEVICE_ADMIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name="IccLockSettings" android:label="@string/sim_lock_settings"
                 android:process="com.android.phone">
             <intent-filter>