Allow users to create shortcuts to the VPN settings on the Home Screen.

Change-Id: I4bf78c78ae35ea3d485e71a46f7aecdecdbfd8a0

AndroidManifest.xml

@@ -188,6 +188,7 @@
         </activity>
 
         <activity android:name=".vpn.VpnSettings"
+                android:label="@string/vpn_settings_title"
                 android:configChanges="orientation|keyboardHidden"
                 android:clearTaskOnLaunch="true">
             <intent-filter>
@@ -195,6 +196,7 @@
                 <action android:name="android.net.vpn.SETTINGS" />
                 <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>