single task mode for start conversations activity

src/main/AndroidManifest.xml

@@ -47,6 +47,7 @@
         <activity
             android:name=".ui.StartConversationActivity"
             android:configChanges="orientation|screenSize"
+            android:launchMode="singleTask"
             android:label="@string/title_activity_start_conversation" >
             <intent-filter>
                 <action android:name="android.intent.action.SENDTO" />