Fix task stack building on ICS

Change-Id: I2f4ed27c49d339ceb4424cfe7457e645c9cc2ad6
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index a5ba894..49841ae 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -86,6 +86,8 @@
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="vnd.android.cursor.item/event" />
             </intent-filter>
+            <meta-data android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.android.calendar.AllInOneActivity" />
         </activity>
 
         <activity android:name=".event.EditEventActivity"