stay in FDroid after adding a new repo via Intent

If a new repo comes in via Intent, like from clicking a link, scanning a QR
Code, etc., then stay in FDroid once the add dialog is complete.
Previously, it would sometimes stay in FDroid and sometimes go back to the
sending Activity, depending on the sending Activity.  It was confusing and
annoying behavior.

AndroidManifest.xml

@@ -96,9 +96,8 @@
         </activity>
         <activity
             android:name=".ManageRepo"
-            android:allowTaskReparenting="true"
             android:label="@string/menu_manage"
-            android:launchMode="singleTop"
+            android:launchMode="singleTask"
             android:parentActivityName=".FDroid" >
             <meta-data
                 android:name="android.support.PARENT_ACTIVITY"